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Search: id:A083068
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A083068 7th row of number array A083064. +0
3
1, 7, 55, 439, 3511, 28087, 224695, 1797559, 14380471, 115043767, 920350135, 7362801079, 58902408631, 471219269047, 3769754152375, 30158033218999, 241264265751991, 1930114126015927, 15440913008127415, 123527304065019319 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n)=(6*8^n+1)/7 G.f. (1-2x)/((1-8x)(1-x)) E.g.f. (6*exp(8x)+exp(x))/7

CROSSREFS

Cf. A083067, A083066.

Sequence in context: A015564 A070997 A122372 this_sequence A097189 A049028 A096951

Adjacent sequences: A083065 A083066 A083067 this_sequence A083069 A083070 A083071

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Apr 21 2003

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Last modified July 6 17:22 EDT 2008. Contains 140988 sequences.


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