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Search: id:A152110
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| A152110 |
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G.f.: -2*(-2-11*x-4*x^2+x^3)/(x-1)^4. |
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+0
2
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| 4, 38, 136, 330, 652, 1134, 1808, 2706, 3860, 5302, 7064, 9178, 11676, 14590, 17952, 21794, 26148, 31046, 36520, 42602, 49324, 56718, 64816, 73650, 83252, 93654, 104888, 116986, 129980, 143902, 158784, 174658, 191556, 209510, 228552, 248714
(list; graph; listen)
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OFFSET
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0,1
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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). a(n) = 2*(n+1)*(8*n^2+8*n+3)/3 = A152133(2*n-1). [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: A020205 A003633 A129310 this_sequence A092642 A020865 A155859
Adjacent sequences: A152107 A152108 A152109 this_sequence A152111 A152112 A152113
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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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