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Search: id:A133325
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| A133325 |
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Numbers such that 2*X^2-82 is a square. |
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+0
1
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| 7, 13, 29, 71, 167, 413, 973, 2407, 5671, 14029, 33053, 81767, 192647
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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The bisections modulo 2 satisfy the same recurrence relation a(n+2)=6*a(n+1)-a(n)
G.f.: -x*(x-1)*(7*x^2+20*x+7)/(x^2+2*x-1)/(x^2-2*x-1). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 14 2007
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CROSSREFS
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Sequence in context: A045463 A082221 A096333 this_sequence A063583 A065764 A073473
Adjacent sequences: A133322 A133323 A133324 this_sequence A133326 A133327 A133328
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KEYWORD
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nonn
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AUTHOR
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R. Choulet (richardchoulet(AT)yahoo.fr), Oct 18 2007
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