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A037747

Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 2,3,0,1.

2, 17, 119, 834, 5840, 40883, 286181, 2003268, 14022878, 98160149, 687121043, 4809847302, 33668931116, 235682517815, 1649777624705, 11548443372936, 80839103610554, 565873725273881, 3961116076917167

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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*(2+3*x+x^3) ) / ( (x-1)*(7*x-1)*(1+x)*(1+x^2) ). - R. J. Mathar, Oct 15 2015

CROSSREFS

Sequence in context: A294271 A203123 A198043 * A037628 A037754 A037642

Adjacent sequences: A037744 A037745 A037746 * A037748 A037749 A037750

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved

URL: https://oeis.org/A037747

⇱ A037747 - OEIS