A037634 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,3.

2, 13, 81, 488, 2929, 17577, 105464, 632785, 3796713, 22780280, 136681681, 820090089, 4920540536, 29523243217, 177139459305, 1062836755832, 6377020534993, 38262123209961, 229572739259768, 1377436435558609

Offset

1,1

Links

Table of n, a(n) for n=1..20.

Index entries for linear recurrences with constant coefficients, signature (6,0,1,-6).

Formula

G.f.: x*(2+x+3*x^2) / ( (x-1)*(6*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 29 2015

Crossrefs

Sequence in context: A246383 A189087 A037739 * A074581 A020059 A162772

Adjacent sequences: A037631 A037632 A037633 * A037635 A037636 A037637

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved