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A037796 Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 3,2,1,0. 1
3, 23, 162, 1134, 7941, 55589, 389124, 2723868, 19067079, 133469555, 934286886, 6540008202, 45780057417, 320460401921, 2243222813448, 15702559694136, 109917917858955, 769425425012687, 5385977975088810 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..19.

Index entries for linear recurrences with constant coefficients, signature (7,0,0,1,-7).

FORMULA

a(n) = 7a(n-1) + a(n-4) - 7a(n-5).

G.f.: x*(3+2*x+x^2) / ( (x-1)*(7*x-1)*(1+x)*(x^2+1) ). - R. J. Mathar, Apr 30 2015

CROSSREFS

Sequence in context: A164536 A037789 A037670 * A212395 A027141 A002398

Adjacent sequences:  A037793 A037794 A037795 * A037797 A037798 A037799

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 20 19:36 EDT 2019. Contains 324234 sequences. (Running on oeis4.)