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7, 24, 41, 58, 75, 92, 109, 126, 143, 160, 177, 194, 211, 228, 245, 262, 279, 296, 313, 330, 347, 364, 381, 398, 415, 432, 449, 466, 483, 500, 517, 534, 551, 568, 585, 602, 619, 636, 653, 670, 687, 704, 721, 738, 755, 772, 789, 806, 823, 840, 857, 874, 891
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| a(n)^4 = sum [i = 0 ... 16*n*(17*n+14)+46] (119*n^2+98*n+20+i)^2*(-1)^i = (17*n+7)^4 [From Bruno Berselli (berselli.bruno(AT)yahoo.it), Apr 30 2010]
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FORMULA
| G.f.: (7+10*x)/(1-x)^2. [Colin Barker, Jan 09 2012]
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EXAMPLE
| For n=0, a(n)=7; n=10, a(10)=177
For n=5, a(5)^4 = 92^4 = 71639296 = 3485^2 - 3486^2 + 3487^2 - ... + 11449^2 - 11450^2 + 11451^2 [From Bruno Berselli (berselli.bruno(AT)yahoo.it), Apr 30 2010]
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MATHEMATICA
| Range[7, 1000, 17] (* From Vladimir Joseph Stephan Orlovsky (4vladimir(AT)gmail.com), June 01 2011 *)
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CROSSREFS
| Cf. A008599, A138629, A138630
Sequence in context: A076602 A076673 A063165 * A031084 A063136 A031306
Adjacent sequences: A154609 A154610 A154611 * A154613 A154614 A154615
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KEYWORD
| nonn,easy
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AUTHOR
| Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 15 2009
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EXTENSIONS
| Offset corrected by Bruno Berselli (berselli.bruno(AT)yahoo.it), Aug 16 2010
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