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Search: id:A081190
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A081190 8th binomial transform of (1,0,1,0,1,.....), A059841. +0
5
1, 8, 65, 536, 4481, 37928, 324545, 2803256, 24405761, 213887048, 1884629825, 16679193176, 148135411841, 1319377419368, 11777507763905, 105319346802296, 943126559710721, 8454906106826888, 75861524447454785, 681125306429182616 (list; graph; listen)
OFFSET

0,2

COMMENT

Binomial transform of A081189.

FORMULA

a(n)=16a(n-1)-63a(n-2), a(0)=1, a(1)=8. G.f.: (1-8x)/((1-7x)(1-9x)). E.g.f. exp(8x)cosh(x). a(n)=7^n/2+9^n/2.

CROSSREFS

Cf. A060531.

Sequence in context: A022039 A041025 A163459 this_sequence A024105 A041114 A015496

Adjacent sequences: A081187 A081188 A081189 this_sequence A081191 A081192 A081193

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 11 2003

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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