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A138190
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Numerator of (n-1)n(n+1)/12.
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1
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0, 1, 2, 5, 10, 35, 28, 42, 60, 165, 110, 143, 182, 455, 280, 340, 408, 969, 570, 665, 770, 1771, 1012, 1150, 1300, 2925, 1638, 1827, 2030, 4495, 2480, 2728, 2992, 6545, 3570, 3885, 4218, 9139, 4940, 5330, 5740, 12341, 6622, 7095, 7590, 16215, 8648
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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COMMENTS
| a(n+2) is the numerator of A000295(n+2)/(3*int(t^n*(1-abs(1-t))^2,t=0..2))
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LINKS
| Eric Weisstein's World of Mathematics, KirchhoffIndex
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EXAMPLE
| 0, 1/2, 2, 5, 10, 35/2, 28, 42, 60, 165/2, 110, 143, 182, ...
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CROSSREFS
| Cf. A138191.
Sequence in context: A155580 A018386 A089073 * A056300 A144636 A018418
Adjacent sequences: A138187 A138188 A138189 * A138191 A138192 A138193
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KEYWORD
| nonn,frac
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AUTHOR
| E. W. Weisstein (eric(AT)weisstein.com), Mar 04, 2008
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