The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A011272

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A011272

Hybrid binary rooted trees with n nodes whose root is labeled by "a".
(history; published version)

#11 by Peter Luschny at Thu Apr 02 17:29:13 EDT 2015

STATUS

reviewed

approved

#10 by Joerg Arndt at Thu Apr 02 14:18:21 EDT 2015

STATUS

proposed

reviewed

#9 by Michel Marcus at Thu Apr 02 13:02:17 EDT 2015

STATUS

editing

proposed

#8 by Michel Marcus at Thu Apr 02 13:01:58 EDT 2015

REFERENCES

N. S. S. Gu, N. Y. Li and T. Mansour, 2-Binary trees: bijections and related issues, Discr. Math., 308 (2008), 1209-1221.

J.M. Pallo, On the listing and random generation of hybrid binary trees, International Journal of Computer Mathematics, 50, 1994, 135-145.

LINKS

Nancy S. S. Gu, Nelson Y. Li, and Toufik Mansour, <a href="http://dx.doi.org/10.1016/j.disc.2007.04.007">2-Binary trees: bijections and related issues</a>, Discr. Math., 308 (2008), 1209-1221.

J. M. Pallo, <a href="http://dx.doi.org/10.1080/00207169408804251">On the listing and random generation of hybrid binary trees</a>, International Journal of Computer Mathematics, 50 (1994) 135-145.

FORMULA

a(n) = A007863 (n) - A011270(n).

AUTHOR

Jean Pallo (pallo(AT)u-bourgogne.fr (Jean Pallo)

STATUS

approved

editing

#7 by Russ Cox at Sun Jul 10 18:22:30 EDT 2011

LINKS

<a href="/Sindx_index/Ro.html#rooted">Index entries for sequences related to rooted trees</a>

Discussion

Sun Jul 10

18:22

OEIS Server: https://oeis.org/edit/global/79

#6 by N. J. A. Sloane at Thu Nov 11 07:34:06 EST 2010

LINKS

<a href="/Sindx_Ro.html#rooted">Index entries for sequences related to rooted trees</a>

KEYWORD

nonn,new

nonn

#5 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009

LINKS

<a href="http://www.research.att.com/~njas/sequences/Sindx_Ro.html#rooted">Index entries for sequences related to rooted trees</a>

KEYWORD

nonn,new

nonn

#4 by N. J. A. Sloane at Sun Jun 29 03:00:00 EDT 2008

REFERENCES

N. S. S. Gu, N. Y. Li and T. Mansour, 2-Binary trees: bijections and related issues, Discr. Math., 308 (2008), 1209-1221.

KEYWORD

nonn,new

nonn

#3 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

LINKS

<a href="http://www.research.att.com/~njas/sequences/Sindx_RRo.html#rooted">Index entries for sequences related to rooted trees</a>

KEYWORD

nonn,new

nonn

AUTHOR

pallo@(AT)u-bourgogne.fr (Jean Pallo)

#2 by N. J. A. Sloane at Mon May 08 03:00:00 EDT 2000

NAME

Hybrid binary rooted trees with n nodes whose root is labeled by "a".

LINKS

<a href="http://www.research.att.com/~njas/sequences/Sindx_R.html#rooted">Index entries for sequences related to rooted trees</a>

KEYWORD

nonn,new

nonn