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Search: id:A132355
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| A132355 |
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Sequence allows us to find X values of the equation: 9*X^3 + X^2 = Y^2. |
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+0
3
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| 0, 7, 11, 32, 40, 75, 87, 136, 152, 215, 235, 312, 336, 427, 455, 560, 592, 711, 747, 880, 920, 1067, 1111, 1272, 1320, 1495, 1547, 1736, 1792, 1995, 2055, 2272, 2336, 2567, 2635, 2880, 2952, 3211, 3287, 3560
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OFFSET
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0,2
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FORMULA
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a(2n)=n(9n+2), a(2n+1)=9*n^2 + 16n + 7.
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CROSSREFS
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Cf. A054000, A056220, A000217, A087475, A028347, A062717, A036666, A002378, A001082, A046092, A005563, A132209.
Sequence in context: A053711 A043110 A043890 this_sequence A019416 A138122 A129865
Adjacent sequences: A132352 A132353 A132354 this_sequence A132356 A132357 A132358
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KEYWORD
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nonn
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AUTHOR
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Mohamed Bouhamida (bhmd95(AT)yahoo.fr), Nov 08 2007
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