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A152965
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Twice 12-gonal numbers: a(n) = 2*n*(5*n-4).
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5
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0, 2, 24, 66, 128, 210, 312, 434, 576, 738, 920, 1122, 1344, 1586, 1848, 2130, 2432, 2754, 3096, 3458, 3840, 4242, 4664, 5106, 5568, 6050, 6552, 7074, 7616, 8178, 8760, 9362, 9984, 10626, 11288, 11970, 12672, 13394, 14136, 14898, 15680
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OFFSET
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0,2
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LINKS
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FORMULA
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MATHEMATICA
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LinearRecurrence[{3, -3, 1}, {0, 2, 24}, 60] (* Harvey P. Dale, Apr 18 2016 *)
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PROG
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CROSSREFS
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Cf. numbers of the form n*(n*k - k + 4))/2 listed in A226488 (this sequence is the case k=20). - Bruno Berselli, Jun 10 2013
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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