A037531 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,2.

1, 7, 44, 265, 1591, 9548, 57289, 343735, 2062412, 12374473, 74246839, 445481036, 2672886217, 16037317303, 96223903820, 577343422921, 3464060537527, 20784363225164, 124706179350985, 748237076105911, 4489422456635468

Offset

1,2

Links

Table of n, a(n) for n=1..21.

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

Formula

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

Crossrefs

Sequence in context: A026116 A216237 A291388 * A178719 A094113 A218992

Adjacent sequences: A037528 A037529 A037530 * A037532 A037533 A037534

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved