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A104651
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Numbers n such that n^2 = 29*k^2 + 29*k +1, k sequence = A104652.
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1
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OFFSET
| 1,2
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (0,0,19602,0,0,-1).
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FORMULA
| define a(1)=1, a(2)=175, a(3)=16589, a(4)=19602*a(1)+a(3), a(5)=19602*a(2)+a(2), a(6)=19602*a(3)+a(1), then a(n)=19602*a(n-3)-a(n-6).
G.f. x*(1+x)*(x^4+174*x^3+16415*x^2+174*x+1) / ( (x^2-27*x+1)*(x^4+27*x^3+728*x^2+27*x+1) ). - R. J. Mathar, Aug 23 2011
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CROSSREFS
| Cf. A104652.
Sequence in context: A187420 A186212 A056935 * A172685 A136603 A114824
Adjacent sequences: A104648 A104649 A104650 * A104652 A104653 A104654
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KEYWORD
| nonn,easy
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AUTHOR
| Pierre CAMI (pierre-cami(AT)bbox.fr), Apr 22 2005
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