A037485 Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,2.

1, 10, 81, 650, 5201, 41610, 332881, 2663050, 21304401, 170435210, 1363481681, 10907853450, 87262827601, 698102620810, 5584820966481, 44678567731850, 357428541854801, 2859428334838410

Offset

1,2

Links

Table of n, a(n) for n=1..18.

Index entries for linear recurrences with constant coefficients, signature (8,1,-8).

Formula

a(n) = 8*a(n-1) + a(n-2) - 8*a(n-3).

G.f.: x*(1+2*x)/((1-8*x)*(1-x^2)). a(n) = (20*8^n+7*(-1)^n-27)/126. - Bruno Berselli, Jan 20 2011

Crossrefs

Sequence in context: A154236 A095004 A037541 * A343276 A363559 A350503

Adjacent sequences: A037482 A037483 A037484 * A037486 A037487 A037488

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved