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Search: id:A081656
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A081656 2*6^n-2^n. +0
4
1, 10, 68, 424, 2576, 15520, 93248, 559744, 3358976, 20154880, 120931328, 725592064, 4353560576, 26121379840, 156728311808, 940369936384, 5642219749376, 33853318758400, 203119913074688, 1218719479496704 (list; graph; listen)
OFFSET

0,2

COMMENT

Binomial transform of A081655. Inverse binomial transform of A081657.

FORMULA

G.f. (1+2x)/((1-6x)(1-2x)) E.g.f. 2exp(6x)-exp(2x)

CROSSREFS

Third column of array A094424.

Sequence in context: A104598 A026901 A027242 this_sequence A026958 A026988 A081280

Adjacent sequences: A081653 A081654 A081655 this_sequence A081657 A081658 A081659

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 26 2003

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.


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