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A108100
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(2*n-1)^2+(2*n+1)^2.
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3
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2, 10, 34, 74, 130, 202, 290, 394, 514, 650, 802, 970, 1154, 1354, 1570, 1802, 2050, 2314, 2594, 2890, 3202, 3530, 3874, 4234, 4610, 5002, 5410, 5834, 6274, 6730, 7202, 7690, 8194, 8714, 9250, 9802, 10370, 10954, 11554, 12170, 12802, 13450, 14114, 14794, 15490
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..10000
Index entries for sequences related to linear recurrences with constant coefficients, signature (3,-3,1).
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FORMULA
| O.g.f.: 2*(1+2*x+5*x^2)/(1-x)^3. a(n) = 2*A053755(n). - R. J. Mathar, Aug 24 2008
a(n) = a(-n); a(n)+a(-n) = A158444(n). - Bruno Berselli, Sep 06 2011
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MATHEMATICA
| Table[8n^2+2, {n, 0, 50}] (* From Harvey P. Dale, Feb 20 2011 *)
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PROG
| (MAGMA) [8*n^2+2: n in [0..50]]; // Vincenzo Librandi, Sep 06 2011
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CROSSREFS
| Cf. A016754. Apart from leading term, same as A008527.
Sequence in context: A062453 A036369 A043004 * A059924 A022498 A036799
Adjacent sequences: A108097 A108098 A108099 * A108101 A108102 A108103
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KEYWORD
| nonn,easy
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AUTHOR
| Dorthe Roel (dorthe_roel(AT)hotmail.com or dorthe.roel1(AT)skolekom.dk), Jun 07 2005
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