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Search: id:A158798
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| A158798 |
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a(n)=a(n-1)+64*a(n-2), a(0)=1, a(1)=8. |
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+0
2
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| 1, 8, 72, 584, 5192, 42568, 374856, 3099208, 27089992, 225439304, 1959198792, 16387314248, 141776036936, 1190564148808, 10264230512712, 86460336036424, 743371088849992, 6279832595181128, 53852582281580616, 455569868373172808
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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G.f.: (1+7x)/(1-x-64*x^2).
a(n)=(1/2)*{[(1/2)+(1/2)*sqrt(257)]^n+[(1/2)-(1/2)*sqrt(257)]^n}+(15/514)*sqrt(257)*{[(1/2)+(1/2)*sqrt(257)]^n-[(1/2)-(1/2)*sqrt(257)]^n}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Mar 30 2009]
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CROSSREFS
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Cf. A000045, A026597, A122994, A158608, A122995, A158797, A122996
Sequence in context: A054615 A111919 A052379 this_sequence A062541 A057091 A156566
Adjacent sequences: A158795 A158796 A158797 this_sequence A158799 A158800 A158801
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KEYWORD
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nonn
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AUTHOR
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Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Mar 27 2009
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