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A033131 Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0. +0
1
1, 5, 20, 81, 325, 1300, 5201, 20805, 83220, 332881, 1331525, 5326100, 21304401, 85217605, 340870420, 1363481681, 5453926725, 21815706900, 87262827601, 349051310405, 1396205241620, 5584820966481, 22339283865925, 89357135463700 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A117422 A154639 A003947 this_sequence A022021 A165203 A030520

Adjacent sequences: A033128 A033129 A033130 this_sequence A033132 A033133 A033134

KEYWORD

nonn,base

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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