A037550 - OEIS

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A037550

Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,2.

1, 11, 101, 910, 8192, 73730, 663571, 5972141, 53749271, 483743440, 4353690962, 39183218660, 352648967941, 3173840711471, 28564566403241, 257081097629170, 2313729878662532

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..17.

Index entries for linear recurrences with constant coefficients, signature (9,0,1,-9)

FORMULA

G.f.: x*(1+2*x+2*x^2) / ( (x-1)*(9*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 30 2015

MATHEMATICA

With[{c=PadRight[{}, 21, {1, 2, 2}]}, Table[FromDigits[Take[c, n], 9], {n, 20}]] (* Harvey P. Dale, Feb 19 2012 *)

CROSSREFS

Sequence in context: A045624 A125399 A163146 * A138894 A287832 A122105

Adjacent sequences: A037547 A037548 A037549 * A037551 A037552 A037553

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved