A037542 - OEIS

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A037542

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

0

1, 11, 100, 901, 8111, 73000, 657001, 5913011, 53217100, 478953901, 4310585111, 38795266000, 349157394001, 3142416546011, 28281748914100, 254535740226901, 2290821662042111

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

CROSSREFS

Sequence in context: A018203 A081906 A098296 * A037486 A103720 A322719

Adjacent sequences: A037539 A037540 A037541 * A037543 A037544 A037545

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

STATUS

approved