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Search: id:A104652
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A104652 Numbers k such that 29*k^2 + 29*k +1 = n^2, n sequence = A104651. +0
2
0, 32, 3080, 6720, 637032, 60383960, 131735240, 12487111032, 1183646390640 (list; graph; listen)
OFFSET

1,2

FORMULA

define a(1)=0, a(2)=32, a(3)=3080, a(4)=19602*a(1)+9800-a(3), a(5)=19602*a(2)+9800-a(2), a(6)=19602*a(3)+9800-a(1), then a(n)=19602*a(n-3)+9800-a(n-6)

CROSSREFS

Cf. A104651.

Sequence in context: A113500 A064018 A067321 this_sequence A135787 A016793 A123802

Adjacent sequences: A104649 A104650 A104651 this_sequence A104653 A104654 A104655

KEYWORD

nonn

AUTHOR

Pierre CAMI (pierrecami(AT)tele2.fr), Apr 22 2005

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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