A037628 Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 2,3,0.

2, 17, 119, 835, 5848, 40936, 286554, 2005881, 14041167, 98288171, 688017200, 4816120400, 33712842802, 235989899617, 1651929297319, 11563505081235, 80944535568648, 566611748980536, 3966282242863754

Offset

1,1

Links

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

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

Formula

G.f.: x*(2+3*x) / ( (x-1)*(7*x-1)*(1+x+x^2) ). - R. J. Mathar, Nov 21 2011

Crossrefs

Sequence in context: A203123 A198043 A037747 * A037754 A037642 A161128

Adjacent sequences: A037625 A037626 A037627 * A037629 A037630 A037631

Keyword

nonn,base

Author

Clark Kimberling

Status

approved