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A005262 [ (7*2^(n+1)-6n-10)/3 ].
(Formerly M2793)
+0
1
1, 3, 9, 25, 59, 131, 277, 573, 1167, 2359, 4745, 9521, 19075, 38187, 76413, 152869, 305783, 611615, 1223281, 2446617, 4893291, 9786643, 19573349, 39146765, 78293599 (list; graph; listen)
OFFSET

0,2

COMMENT

Arises from Tower of Hanoi problem.

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Problem 1169, Crux Mathematicorum, 13 (No. 10, 1987), 328-332.

LINKS

S. Plouffe, Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.

S. Plouffe, 1031 Generating Functions and Conjectures, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.

MAPLE

A005262:=-(1+z**2+4*z**3)/((z+1)*(2*z-1)*(z-1)**2); [Conjectured by S. Plouffe in his 1992 dissertation.]

CROSSREFS

Sequence in context: A032681 A005209 A112522 this_sequence A004255 A101357 A065971

Adjacent sequences: A005259 A005260 A005261 this_sequence A005263 A005264 A005265

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.


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