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A004996 6^n/n!*product[ k=0..n-1 ](6*k - 1). 1
1, -6, -90, -1980, -50490, -1393524, -40412196, -1212365880, -37280250810, -1168114525380, -37146041907084, -1195427166827976, -38851382921909220, -1273129932671794440, -42013287778169216520 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..14.

FORMULA

A(x) = (1 - 36*x)^(1/6).

a(n) ~ -1/6*Gamma(5/6)^-1*n^(-7/6)*6^(2*n)*{1 + 7/72*n^-1 + ...}. - Joe Keane (jgk(AT)jgk.org), Nov 24 2001

CROSSREFS

Sequence in context: A138462 A002896 A266734 * A001499 A147630 A221097

Adjacent sequences:  A004993 A004994 A004995 * A004997 A004998 A004999

KEYWORD

sign

AUTHOR

Joe Keane (jgk(AT)jgk.org)

STATUS

approved

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Last modified August 24 02:32 EDT 2017. Contains 291052 sequences.