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A129202
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a(n)=denominator(3(3+(-1)^n)/(n+1)^2).
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4
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1, 2, 3, 8, 25, 6, 49, 32, 27, 50, 121, 24, 169, 98, 75, 128, 289, 54, 361, 200, 147, 242, 529, 96, 625, 338, 243, 392, 841, 150, 961, 512, 363, 578, 1225, 216, 1369, 722, 507, 800, 1681, 294
(list; graph; refs; listen; history; internal format)
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