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0, 12, 26, 42, 60, 80, 102, 126, 152, 180, 210, 242, 276, 312, 350, 390, 432, 476, 522, 570, 620, 672, 726, 782, 840, 900, 962, 1026, 1092, 1160, 1230, 1302, 1376, 1452, 1530, 1610, 1692, 1776, 1862, 1950, 2040, 2132, 2226, 2322, 2420, 2520
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| Equals 2*A056115 - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 12 2007
a(n)=2*a(n-1)-a(n-2)+2 with a(0)=0, a(1)=12 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 01 2010]
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EXAMPLE
| For n=2, a(2)=2*12-0+2=26; n=3, a(3)=2*26-12+2=42; n=4, a(4)=2*42-26+2=60 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 01 2010]
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MAPLE
| a:=n->sum(n, j=12..n): seq(a(n), n=11..56); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Feb 12 2007
seq(GAMMA(n+7)/GAMMA(n+5)-30, n=0..45); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 23 2007
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MATHEMATICA
| s=0; lst={s}; Do[s+=n++ +12; AppendTo[lst, s], {n, 0, 7!, 2}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 19 2008]
Table[n(n+11), {n, 0, 100}] (* From Vladimir Joseph Stephan Orlovsky, May 19 2011 *)
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CROSSREFS
| Cf. A063930.
Sequence in context: A075689 A054303 A184826 * A105814 A030736 A003346
Adjacent sequences: A119409 A119410 A119411 * A119413 A119414 A119415
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KEYWORD
| easy,nonn
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AUTHOR
| Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jul 26 2006
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EXTENSIONS
| Definition simplified and the most obfuscating programs removed - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 31 2010
Corrected offset (11) with offset (0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 01 2010]
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