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A050408
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a(n)=117*n^2/2-99*n/2+1.
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1
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1, 10, 136, 379, 739, 1216, 1810, 2521, 3349, 4294, 5356, 6535, 7831, 9244, 10774, 12421, 14185, 16066, 18064, 20179, 22411, 24760, 27226, 29809, 32509, 35326, 38260, 41311, 44479, 47764, 51166, 54685, 58321, 62074, 65944, 69931, 74035
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..10000
Index to sequences with linear recurrences with constant coefficients, signature (3,-3,1).
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FORMULA
| G.f. ( -1-7*x-109*x^2 ) / (x-1)^3 . - R. J. Mathar, Jul 01 2011
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PROG
| (MAGMA) [117*n^2/2-99*n/2+1: n in [0..45]]; // Vincenzo Librandi, Jul 05 2011
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CROSSREFS
| Sequence in context: A114936 A095653 A024135 * A133197 A128862 A129803
Adjacent sequences: A050405 A050406 A050407 * A050409 A050410 A050411
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KEYWORD
| easy,nonn
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AUTHOR
| Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Dec 22 1999
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