A133671 a(n) = a(n-1) - 64*a(n-2), a(0)=1, a(1)=8.

1, 8, -56, -568, 3016, 39368, -153656, -2673208, 7160776, 178246088, -280043576, -11687793208, 6234995656, 754253760968, 355214038984, -47917026662968, -70650725157944, 2996038981272008, 7517685391380424, -184228809410028088

Offset

0,2

Links

Table of n, a(n) for n=0..19.

Index entries for linear recurrences with constant coefficients, signature (1, -64).

Formula

G.f.: (1+7*x)/(1-x+64*x^2).

a(n) = Sum_{k=0..n} A133607(n,k)*8^k. - Philippe Deléham, Dec 30 2007

Crossrefs

Cf. A133607.

Sequence in context: A209665 A208944 A209072 * A326239 A154411 A105850

Adjacent sequences: A133668 A133669 A133670 * A133672 A133673 A133674

Keyword

easy,sign

Author

Philippe Deléham, Dec 29 2007

Status

approved