id:A034325 - OEIS Search Results

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One fifth of quintic factorial numbers.

+0
9

1, 10, 150, 3000, 75000, 2250000, 78750000, 3150000000, 141750000000, 7087500000000, 389812500000000, 23388750000000000, 1520268750000000000, 106418812500000000000, 7981410937500000000000, 638512875000000000000000 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 594`
	FORMULA	`5a(n) = (5n)(!^5) := product(5j, j=1..n) = 5^(n-1)n!; E.g.f. (-1+(1-5*x)^(-1))/5, a(0) := 0.`
	CROSSREFS	`Cf. A008548, A034300, A034301, A034323, A052562.` `Sequence in context: A098270 A116156 A025750 this_sequence A048907 A061654 A087603` `Adjacent sequences: A034322 A034323 A034324 this_sequence A034326 A034327 A034328`
	KEYWORD	`easy,nonn`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)`

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Last modified August 29 17:10 EDT 2008. Contains 143238 sequences.

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