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A033125 Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1. 0
1, 7, 50, 351, 2457, 17200, 120401, 842807, 5899650, 41297551, 289082857, 2023580000, 14165060001, 99155420007, 694087940050, 4858615580351, 34010309062457, 238072163437200, 1666505144060401 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Index to sequences with linear recurrences with constant coefficients, signature (7,0,1,-7).

FORMULA

a(n) = 7a(n-1) + a(n-3) - 7a(n-4)

CROSSREFS

Sequence in context: A153693 A033117 A096882 * A022037 A054413 A163458

Adjacent sequences:  A033122 A033123 A033124 * A033126 A033127 A033128

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 15 18:19 EST 2012. Contains 205835 sequences.