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530, 1059, 1588, 2117, 2646, 3175, 3704, 4233, 4762, 5291, 5820, 6349, 6878, 7407, 7936, 8465, 8994, 9523, 10052, 10581, 11110, 11639, 12168, 12697, 13226, 13755, 14284, 14813, 15342, 15871, 16400, 16929, 17458, 17987, 18516, 19045, 19574
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OFFSET
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1,1
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COMMENTS
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The identity (529*n+1)^2-(529*n^2+2*n)*(23)^2=1 can be written as a(n)^2-A158367(n)*(23)^2=1.
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LINKS
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FORMULA
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G.f.: x*(530-x)/(1-x)^2.
a(n) = 2*a(n-1)-a(n-2).
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MATHEMATICA
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LinearRecurrence[{2, -1}, {530, 1059}, 50]
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PROG
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(Magma) I:=[530, 1059]; [n le 2 select I[n] else 2*Self(n-1)-Self(n-2): n in [1..50]];
(PARI) a(n) = 529*n + 1.
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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