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Search: id:A048580
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A048580 Pisot sequence L(3,10). +0
2
3, 10, 34, 116, 396, 1352, 4616, 15760, 53808, 183712, 627232, 2141504, 7311552, 24963200, 85229696, 290992384, 993510144, 3392055808, 11581202944, 39540700160, 135000394752, 460920178688, 1573679925248, 5372879343616, 18344157523968, 62630871408640 (list; graph; listen)
OFFSET

0,1

FORMULA

a(n) = 4a(n-1) - 2a(n-2) (holds at least up to n = 1000).

CROSSREFS

Subsequence of A007052. See A008776 for definitions of Pisot sequences.

Sequence in context: A083580 A113300 A007052 this_sequence A059738 A094832 A071725

Adjacent sequences: A048577 A048578 A048579 this_sequence A048581 A048582 A048583

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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