A037585 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 3,1.

3, 19, 117, 703, 4221, 25327, 151965, 911791, 5470749, 32824495, 196946973, 1181681839, 7090091037, 42540546223, 255243277341, 1531459664047, 9188757984285, 55132547905711, 330795287434269, 1984771724605615

Offset

1,1

Links

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

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

Formula

G.f.: x*(3+x) / ( (x-1)*(6*x-1)*(1+x) ). - R. J. Mathar, Apr 26 2015

Crossrefs

Sequence in context: A309183 A261777 A037781 * A084133 A005667 A098444

Adjacent sequences: A037582 A037583 A037584 * A037586 A037587 A037588

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved