id:A083925 - OEIS Search Results

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Inverse function of N -> N injection A057548.

+0
8

0, 0, 0, 1, 0, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 4, 5, 0, 6, 7, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 10, 0, 11, 12, 13, 0, 0, 0, 14, 15, 0, 16, 17, 18, 0, 19, 20, 21, 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; listen)

	OFFSET	`0,8`
	COMMENT	`a(1)=0 because A057548(0)=1, but a(n) = 0 also for those n which do not occur as values of A057548. All positive natural numbers occur here once.`
	FORMULA	`a(n) = A083923(n)*A072771(n)`
	CROSSREFS	`a(A057548(n)) = n for all n. Cf. A083926-A083929, A083935.` `Sequence in context: A079237 A013510 A013504 this_sequence A045830 A078771 A072771` `Adjacent sequences: A083922 A083923 A083924 this_sequence A083926 A083927 A083928`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (MyFirstname.MySurname(AT)iki.fi) May 13 2003`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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