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Search: id:A051605
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| A051605 |
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(3*n+5)!!!/5!!!, related to A008544(n+1) ((3*n+2)!!! triple factorials). |
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+0
2
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| 1, 8, 88, 1232, 20944, 418880, 9634240, 250490240, 7264216960, 232454942720, 8135922995200, 309165073817600, 12675768026521600, 557733793166950400, 26213488278846668800, 1310674413942333440000, 69465743938943672320000
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row m=5 of the array A(4; m,n) := ((3*n+m)(!^3))/m(!^3), m >= 0, n >= 0.
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FORMULA
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a(n) = ((3*n+5)(!^3))/5(!^3); e.g.f.: 1/(1-3*x)^(8/3).
a(n)=3^n*(n+5/3)!/(5/3)! - Paul Barry (pbarry(AT)wit.ie), Sep 04 2005
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CROSSREFS
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Cf. A032031, A007559(n+1), A034000(n+1), A034001(n+1), A051604 (rows m=0..4).
Sequence in context: A115864 A036917 A003497 this_sequence A006750 A082783 A137144
Adjacent sequences: A051602 A051603 A051604 this_sequence A051606 A051607 A051608
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KEYWORD
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easy,nonn
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AUTHOR
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Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)
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