The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A122983 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A122983

a(n) = (2 + (-1)^n + 3^n)/4.
(history; published version)

#90 by Michael De Vlieger at Tue Aug 01 17:50:39 EDT 2023

STATUS

proposed

approved

#89 by Eric W. Weisstein at Tue Aug 01 17:31:01 EDT 2023

STATUS

editing

proposed

#88 by Eric W. Weisstein at Tue Aug 01 17:30:58 EDT 2023

COMMENTS

Also the lower matching number (=independent domination number) of the n-Hanoi graph. - Eric W. Weisstein, Aug 01 2023

LINKS

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/MatchingNumber.html">Matching Number</a>

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/LowerIndependenceNumber.html">Lower Independence Number</a>

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/MatchingNumber.html">Matching Number</a>

STATUS

approved

editing

#87 by Michael De Vlieger at Thu Apr 13 08:30:24 EDT 2023

STATUS

reviewed

approved

#86 by Joerg Arndt at Thu Apr 13 02:34:31 EDT 2023

STATUS

proposed

reviewed

#85 by Michel Marcus at Thu Apr 13 00:51:30 EDT 2023

STATUS

editing

proposed

#84 by Michel Marcus at Thu Apr 13 00:51:24 EDT 2023

LINKS

Alexander Diaz-Lopez, Pamela E. Harris, Erik Insko, and Darleen Perez-Lavin, <a href="http://arxiv.org/abs/1505.04479">Peaks Sets of Classical Coxeter Groups</a>, arXiv preprint, arXiv:1505.04479 [math.GR], 2015.

A. M. Hinz, S. Klavžar, U. Milutinović, and C. Petr, <a href="http://dx.doi.org/10.1007/978-3-0348-0237-6">The Tower of Hanoi - Myths and Maths</a>, Birkhäuser 2013. See page 99. <a href="http://tohbook.info">Book's website</a>

STATUS

proposed

editing

#83 by Chai Wah Wu at Wed Apr 12 20:43:04 EDT 2023

STATUS

editing

proposed

#82 by Chai Wah Wu at Wed Apr 12 20:43:00 EDT 2023

PROG

(Python)

def A122983(n): return (1 if n&1 else 3)+3**n>>2 # Chai Wah Wu, Apr 12 2023

STATUS

approved

editing

#81 by N. J. A. Sloane at Fri Sep 11 11:54:13 EDT 2020

STATUS

proposed

approved