A037562 Base 5 digits are, in order, the first n terms of the periodic sequence with initial period 2,2,1.

2, 12, 61, 307, 1537, 7686, 38432, 192162, 960811, 4804057, 24020287, 120101436, 600507182, 3002535912, 15012679561, 75063397807, 375316989037, 1876584945186, 9382924725932, 46914623629662, 234573118148311, 1172865590741557

Offset

1,1

Links

Table of n, a(n) for n=1..22.

Index entries for linear recurrences with constant coefficients, signature (5,0,1,-5).

Formula

G.f.: x*(2+2*x+x^2) / ( (x-1)*(5*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015

Crossrefs

Sequence in context: A358448 A127044 A245091 * A321277 A187001 A121177

Adjacent sequences: A037559 A037560 A037561 * A037563 A037564 A037565

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved