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A167586
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The fourth row of the ED4 array A167584.
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3
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76, 372, 1020, 2212, 4140, 6996, 10972, 16260, 23052, 31540, 41916, 54372, 69100, 86292, 106140, 128836, 154572, 183540, 215932, 251940, 291756, 335572, 383580, 435972, 492940, 554676, 621372, 693220, 770412, 853140, 941596
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n) = 32*n^3 - 16*n^2 + 120*n - 60.
G.f.: (60*z^3 - 12*z^2 + 68*z + 76)/(1-z)^4.
a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4). - G. C. Greubel, Jun 17 2016
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MATHEMATICA
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LinearRecurrence[{4, -6, 4, -1}, {76, 372, 1020, 2212}, 100] (* G. C. Greubel, Jun 17 2016 *)
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CROSSREFS
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Equals the fourth row of the ED4 array A167584.
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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