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A071233
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2*(n-1)*(n^2+1).
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1
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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; internal format)
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OFFSET
| 1,2
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REFERENCES
| T. A. Gulliver, Sequences from Arrays of Integers, Int. Math. Journal, Vol. 1, No. 4, pp. 323-332, 2002.
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 1..2000
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FORMULA
| a(n) = +4*a(n-1) -6*a(n-2) +4*a(n-3) -1*a(n-4)
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PROG
| (MAGMA) [2*(n-1)*(n^2+1): n in [1..50]]; // Vincenzo Librandi, Jun 14 2011
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CROSSREFS
| Sequence in context: A060317 A033583 A131037 * A063490 A002419 A199826
Adjacent sequences: A071230 A071231 A071232 * A071234 A071235 A071236
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jun 11 2002
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