A037522 Base 5 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,0.

2, 11, 55, 277, 1386, 6930, 34652, 173261, 866305, 4331527, 21657636, 108288180, 541440902, 2707204511, 13536022555, 67680112777, 338400563886, 1692002819430, 8460014097152, 42300070485761, 211500352428805, 1057501762144027

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+x) / ( (x-1)*(5*x-1)*(1+x+x^2) ). - R. J. Mathar, Nov 21 2011

Crossrefs

Sequence in context: A251662 A327215 A307444 * A037731 A221019 A371439

Adjacent sequences: A037519 A037520 A037521 * A037523 A037524 A037525

Keyword

nonn,base

Author

Clark Kimberling

Status

approved