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A085385
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Binomial transform of hexagonal pyramidal numbers A002412.
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0
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0, 1, 9, 46, 184, 640, 2032, 6048, 17152, 46848, 124160, 321024, 813056, 2023424, 4960256, 12001280, 28704768, 67960832, 159449088, 371064832, 857210880, 1967128576, 4486856704, 10177478656, 22968008704, 51589939200, 115376914432
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OFFSET
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0,3
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LINKS
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FORMULA
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a(n) = n*2^n(2n^2 + 9n + 1)/4!.
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PROG
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(PARI) a(n) = n*2^n*(2*n^2+9*n+1)/4! \\ Michel Marcus, May 18 2013
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CROSSREFS
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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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