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A163279
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(n^6 + 2n^5 + 2n^4 + n^3 + 2n)/2.
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1
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4, 86, 705, 3364, 11630, 32514, 78211, 168200, 331704, 610510, 1062149, 1763436, 2814370, 4342394, 6507015, 9504784, 13574636, 19003590, 26132809, 35364020, 47166294, 62083186, 80740235, 103852824, 132234400, 166805054, 208600461
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Charles R Greathouse IV, Table of n, a(n) for n = 1..1000
Index to sequences with linear recurrences with constant coefficients, signature (7,-21,35,-35,21,-7,1).
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PROG
| (Matlab) for n=1:354 a(n) = n^2*((n*(n+1))^2 + n*(n+1) + 2/n)/2; end [From Kyle Stern (kstern1(AT)umbc.edu), Jan 05 2010]
(PARI) a(n)=(n^6+n^3)/2+n^5+n^4+n \\ Charles R Greathouse IV, Jul 29 2011
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CROSSREFS
| Cf. A000290, A002378, A035287.
Sequence in context: A055776 A055591 A055764 * A130268 A204460 A162086
Adjacent sequences: A163276 A163277 A163278 * A163280 A163281 A163282
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KEYWORD
| easy,nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Nov 07 2009
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EXTENSIONS
| More terms from Kyle Stern (kstern1(AT)umbc.edu), Jan 05 2010
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