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A033145 Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0. 1
1, 9, 81, 730, 6570, 59130, 532171, 4789539, 43105851, 387952660, 3491573940, 31424165460, 282817489141, 2545357402269, 22908216620421, 206173949583790 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Index to sequences with linear recurrences with constant coefficients, signature (9,0,1,-9)

FORMULA

a(n) = +9*a(n-1) +a(n-3) -9*a(n-4). G.f.:  x / ( (x-1)*(9*x-1)*(1+x+x^2) ). - R. J. Mathar, Jan 08 2011

CROSSREFS

Sequence in context: A158779 A047901 A061587 * A158762 A101601 A144821

Adjacent sequences:  A033142 A033143 A033144 * A033146 A033147 A033148

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 15 03:33 EST 2012. Contains 205694 sequences.