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Search: id:A152100
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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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+0
2
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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; listen)
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OFFSET
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0,2
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FORMULA
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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
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Cf. A006071.
Sequence in context: A167633 A108650 A093567 this_sequence A010821 A022706 A085462
Adjacent sequences: A152097 A152098 A152099 this_sequence A152101 A152102 A152103
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane, Sep 21 2009, based on email from R. J. Mathar, Mar 22 2009
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 22 2009
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