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 A071233 a(n) = 2*(n-1)*(n^2 + 1). 1
 0, 10, 40, 102, 208, 370, 600, 910, 1312, 1818, 2440, 3190, 4080, 5122, 6328, 7710, 9280, 11050, 13032, 15238, 17680, 20370, 23320, 26542, 30048, 33850, 37960, 42390, 47152, 52258, 57720, 63550, 69760, 76362, 83368, 90790, 98640, 106930, 115672, 124878, 134560 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 REFERENCES T. A. Gulliver, Sequences from Arrays of Integers, Int. Math. Journal, Vol. 1, No. 4, pp. 323-332, 2002. LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..2000 FORMULA a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4). PROG (MAGMA) [2*(n-1)*(n^2+1): n in [1..50]]; // Vincenzo Librandi, Jun 14 2011 CROSSREFS Sequence in context: A060317 A033583 A131037 * A063490 A251121 A002419 Adjacent sequences:  A071230 A071231 A071232 * A071234 A071235 A071236 KEYWORD nonn,easy AUTHOR N. J. A. Sloane, Jun 11 2002 STATUS approved

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Last modified October 17 22:44 EDT 2019. Contains 328134 sequences. (Running on oeis4.)