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Search: id:A081678
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A081678 (4*6^n-3*5^n-3^n)/6. +0
1
0, 1, 10, 77, 538, 3581, 23170, 147197, 923338, 5738621, 35418130, 217421117, 1329029338, 8096512061, 49190221090, 298195475837, 1804438818538, 10902948379901, 65799224576050, 396702889799357, 2389754663090938 (list; graph; listen)
OFFSET

0,3

COMMENT

Binomial transform of A081675.

FORMULA

G.f.: x(1-4x)/((1-3x)(1-5x)(1-6x))

CROSSREFS

Sequence in context: A000808 A159579 A140763 this_sequence A081182 A127536 A016201

Adjacent sequences: A081675 A081676 A081677 this_sequence A081679 A081680 A081681

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 28 2003

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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