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A037485 Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,2. 0
1, 10, 81, 650, 5201, 41610, 332881, 2663050, 21304401, 170435210, 1363481681, 10907853450, 87262827601, 698102620810, 5584820966481, 44678567731850, 357428541854801, 2859428334838410 (list; graph; refs; listen; history; text; internal format)
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 * A277205 A193327 A043458

Adjacent sequences:  A037482 A037483 A037484 * A037486 A037487 A037488

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified January 16 15:53 EST 2019. Contains 319195 sequences. (Running on oeis4.)