id:A119688 - OEIS Search Results

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A119688

n!! mod (n+1).

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1, 2, 3, 3, 3, 6, 1, 6, 5, 1, 3, 8, 7, 0, 1, 13, 9, 1, 15, 0, 11, 1, 9, 0, 13, 0, 7, 17, 15, 1, 1, 0, 17, 0, 27, 6, 19, 0, 25, 9, 21, 1, 11, 0, 23, 46, 33, 0, 25, 0, 39, 30, 27, 0, 49, 0, 29, 58, 15, 50, 31, 0, 10, 33, 1, 51, 0, 35, 1, 9, 27, 37, 0, 19, 0, 39, 78, 65, 0, 41, 82, 63, 0, 43, 0, 33 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`n=5 5!! = 531 = 15 mod (5+1) = 15 mod 6 = 3` `n=6 6!! = 642 = 48 mod (6+1) = 48 mod 7 = 6`
	MAPLE	`P:= proc(n) local i, j, k, s; for k from 1 by 1 to n do i:=k; j:=k-2; while j >0 do i:=i*j; j:=j-2; od: s:=i mod (k+1); print(s); od: end: P(100);`
	CROSSREFS	`Cf. A061006.` `Adjacent sequences: A119685 A119686 A119687 this_sequence A119689 A119690 A119691` `Sequence in context: A042957 A131048 A126868 this_sequence A134187 A078644 A133700`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Jun 09 2006`

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Last modified October 13 17:46 EDT 2008. Contains 145008 sequences.

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