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0, 17, 40, 69, 104, 145, 192, 245, 304, 369, 440, 517, 600, 689, 784, 885, 992, 1105, 1224, 1349, 1480, 1617, 1760, 1909, 2064, 2225, 2392, 2565, 2744, 2929, 3120, 3317, 3520, 3729, 3944, 4165, 4392, 4625, 4864, 5109, 5360, 5617
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(n)=3*n^2 + 14*n.
a(n)=6*n+a(n-1)+11 (with a(0)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 03 2010]
a(1)=0, a(2)=17, a(3)=40, a(n)=3a(n-1) - 3a(n-2) + a(n-3) [From Harvey P. Dale, Apr 29 2011]
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EXAMPLE
| a(1)=6*1+0+11=17; a(2)=6*2+17+11=40; a(3)=6*3+40+11=69 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 03 2010]
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MATHEMATICA
| Table[n(3n+14), {n, 0, 50}] (* or *) LinearRecurrence[{3, -3, 1}, {0, 17, 40}, 50] (* From Harvey P. Dale, Apr 29 2011 *)
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CROSSREFS
| Cf. A033428, A045944, A140676, A067725, A140677, A140678, A067707, A140680, A140681, A140689.
Sequence in context: A156777 A070142 A070143 * A152817 A078553 A104043
Adjacent sequences: A140676 A140677 A140678 * A140680 A140681 A140682
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KEYWORD
| easy,nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), May 22 2008
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