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Search: id:A084944
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| A084944 |
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Hendecagorials: n-th polygorial for k=11. |
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+0
14
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| 1, 1, 11, 330, 19140, 1818300, 256380300, 50250538800, 13065140088000, 4350691649304000, 1805537034461160000, 913601739437346960000, 553642654099032257760000, 395854497680808064298400000
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OFFSET
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0,3
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FORMULA
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A084944(n) = Polygorial(n, 11) = A000142(n)/A000079(n)*A084949(n) = n!/2^n*product(9*i+2, i=0..n-1) = n!/2^n*9^n*pochhammer(2/9, n) = n!/2^n*9^n*GAMMA(n+2/9)/GAMMA(2/9)
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MAPLE
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a := n->n!/2^n*product(9*i+2, i=0..n-1); [seq(a(j), j=0..30)];
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CROSSREFS
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Cf. A006472, A001044, A000680, A084939, A084940, A084941, A084942, A084943, A085356.
Sequence in context: A106827 A108274 A115609 this_sequence A107441 A086923 A106717
Adjacent sequences: A084941 A084942 A084943 this_sequence A084945 A084946 A084947
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KEYWORD
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easy,nonn
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AUTHOR
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Daniel Dockery (peritus(AT)gmail.com) Jun 13 2003
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