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A132123
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n * (2*n + 1) * (6*n^2 + 4*n + 1) / 3.
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1
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0, 11, 110, 469, 1356, 3135, 6266, 11305, 18904, 29811, 44870, 65021, 91300, 124839, 166866, 218705, 281776, 357595, 447774, 554021, 678140, 822031, 987690, 1177209, 1392776, 1636675, 1911286, 2219085, 2562644, 2944631, 3367810, 3835041
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Central terms of the triangle in A132121.
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FORMULA
| G.f.=x(11+55x+29x^2+x^3)/(1-x)^5. - Emeric Deutsch (deutsch(AT)duke.poly.edu), Aug 19 2007
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MAPLE
| seq((1/3)*n*(2*n+1)*(6*n^2+4*n+1), n=0..32); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Aug 19 2007
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CROSSREFS
| Sequence in context: A169631 A103542 A044343 * A190944 A115822 A162760
Adjacent sequences: A132120 A132121 A132122 * A132124 A132125 A132126
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KEYWORD
| nonn
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AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 12 2007
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