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0, 2, 20, 70, 168, 330, 572, 910, 1360, 1938, 2660, 3542, 4600, 5850, 7308, 8990, 10912, 13090, 15540, 18278, 21320, 24682, 28380, 32430, 36848, 41650, 46852, 52470, 58520, 65018, 71980, 79422, 87360, 95810, 104788, 114310, 124392, 135050, 146300, 158158, 170640, 183762, 197540, 211990, 227128, 242970
(list;
graph;
refs;
listen;
history;
text;
internal format)
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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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G.f.: 2*x*(x^2+6*x+1) / (x-1)^4. - Colin Barker, Jun 28 2015
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MATHEMATICA
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LinearRecurrence[{4, -6, 4, -1}, {0, 2, 20, 70}, 50] (* Harvey P. Dale, Feb 01 2018 *)
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PROG
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(PARI) concat(0, Vec(2*x*(x^2+6*x+1)/(x-1)^4 + O(x^100))) \\ Colin Barker, Jun 28 2015
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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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