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A033127 Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1. 0
1, 9, 82, 739, 6651, 59860, 538741, 4848669, 43638022, 392742199, 3534679791, 31812118120, 286309063081, 2576781567729, 23191034109562, 208719306986059, 1878473762874531 (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) = 9a(n-1) + a(n-3) - 9a(n-4)

CROSSREFS

Sequence in context: A115988 A067506 A033119 * A099371 A068109 A163460

Adjacent sequences:  A033124 A033125 A033126 * A033128 A033129 A033130

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 13:28 EST 2012. Contains 206031 sequences.