A037547 Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,2.

1, 8, 50, 301, 1808, 10850, 65101, 390608, 2343650, 14061901, 84371408, 506228450, 3037370701, 18224224208, 109345345250, 656072071501, 3936432429008, 23618594574050, 141711567444301, 850269404665808, 5101616427994850

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+2*x+2*x^2) / ( (x-1)*(6*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015

Mathematica

nn=30; With[{c=PadRight[{}, nn, {1, 2, 2}]}, Table[FromDigits[Take[c, n], 6], {n, nn}]] (* Harvey P. Dale, Apr 26 2012 *)

Crossrefs

Sequence in context: A052177 A127745 A243876 * A061801 A240050 A221478

Adjacent sequences: A037544 A037545 A037546 * A037548 A037549 A037550

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved