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A152100
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G.f.: 1-2*x*(-7-10*x+x^2)/(x-1)^4.
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1
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1, 14, 76, 218, 472, 870, 1444, 2226, 3248, 4542, 6140, 8074, 10376, 13078, 16212, 19810, 23904, 28526, 33708, 39482, 45880, 52934, 60676, 69138, 78352, 88350, 99164, 110826, 123368, 136822, 151220, 166594, 182976, 200398, 218892, 238490
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(n)= 4*a(n-1) -6*a(n-2) +4*a(n-3) -a(n-4), n>4. a(n) = 2*n*(8*n^2+12*n+1)/3, n>0. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 22 2009]
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CROSSREFS
| Cf. A006071.
Sequence in context: A108650 A093567 A200554 * A173962 A200547 A010821
Adjacent sequences: A152097 A152098 A152099 * A152101 A152102 A152103
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane, Sep 21 2009, based on email from R. J. Mathar, Mar 22 2009
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EXTENSIONS
| More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 22 2009
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