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A129988 Fourth differences of A129983. 0
1, 2, 4, 9, 20, 44, 96, 209, 456, 999, 2198, 4854, 10752, 23877, 53142, 118517, 264816, 592744, 1328880, 2983565, 6707396, 15096727, 34014866, 76712042, 173150400, 391119273, 884066890, 1999489733, 4524624820, 10243526452, 23200473632 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..30.

FORMULA

a(n)= +6*a(n-1) -13*a(n-2) +12*a(n-3) -3*a(n-4) -2*a(n-5), n>5.- R. J. Mathar, Feb 11 2016

CROSSREFS

Sequence in context: A109975 A129891 A130587 * A035530 A141016 A008998

Adjacent sequences:  A129985 A129986 A129987 * A129989 A129990 A129991

KEYWORD

nonn,easy

AUTHOR

Paul Curtz, Jun 14 2007

STATUS

approved

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Last modified July 22 07:23 EDT 2019. Contains 325216 sequences. (Running on oeis4.)