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A165676
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Fourth right hand column of triangle A165674
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4
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50, 154, 342, 638, 1066, 1650, 2414, 3382, 4578, 6026, 7750, 9774, 12122, 14818, 17886, 21350, 25234, 29562, 34358, 39646, 45450, 51794, 58702, 66198, 74306, 83050, 92454, 102542, 113338, 124866, 137150, 150214, 164082, 178778
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OFFSET
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1,1
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COMMENTS
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The recurrence relation leads to Pascal's triangle A007318, the a(n) formula to Wiggen's triangle A028421 and the o.g.f to Wood's polynomials A126671; see A165674.
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LINKS
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Table of n, a(n) for n=1..34.
Index entries for linear recurrences with constant coefficients, signature (4,-6,4,-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) = 6 + 22*n + 18*n^2 + 4*n^3
Gf(z) = (0*z^5 - 6*z^4 + 26*z^3 - 46*z^2 + 50*z)/(z-1)^4
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CROSSREFS
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Cf. A165674, A007318, A028421, A126671.
Sequence in context: A104152 A044382 A044763 * A160783 A085445 A048511
Adjacent sequences: A165673 A165674 A165675 * A165677 A165678 A165679
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KEYWORD
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easy,nonn
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AUTHOR
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Johannes W. Meijer, Oct 05 2009
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STATUS
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approved
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