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A029698 Number of words of length 2n in the 10 transpositions of S[5] equivalent to the identity. 1
10, 340, 20860, 1770940, 169271260, 16731772540, 1668294277660, 166707356798140, 16667683919380060, 1666692097982207740, 166667302449546018460, 16666682561238613761340 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..300

FORMULA

(25*4^n+16*25^n +100^n)/60.

PROG

(MAGMA) [(25*4^n+16*25^n +100^n)/60: n in [1..15]]; // Vincenzo Librandi, Jun 30 2011

CROSSREFS

Sequence in context: A113082 A046747 A006426 * A197598 A197982 A197769

Adjacent sequences:  A029695 A029696 A029697 * A029699 A029700 A029701

KEYWORD

nonn

AUTHOR

Paolo Dominici (pl.dm(AT)libero.it)

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.