id:A090112 - OEIS Search Results

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a(n)=pi(n)*[pi(n)-pi(n-2)] where pi(n)=A000720(n).

+0
2

0, 1, 4, 2, 3, 3, 4, 4, 0, 0, 5, 5, 6, 6, 0, 0, 7, 7, 8, 8, 0, 0, 9, 9, 0, 0, 0, 0, 10, 10, 11, 11, 0, 0, 0, 0, 12, 12, 0, 0, 13, 13, 14, 14, 0, 0, 15, 15, 0, 0, 0, 0, 16, 16, 0, 0, 0, 0, 17, 17, 18, 18, 0, 0, 0, 0, 19, 19, 0, 0, 20, 20, 21, 21, 0, 0, 0, 0, 22, 22, 0, 0, 23, 23, 0, 0, 0, 0, 24, 24 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Cf. A049084, A000720, A010051, A000027, A090113.` `Sequence in context: A106644 A136626 A079623 this_sequence A140396 A118945 A016692` `Adjacent sequences: A090109 A090110 A090111 this_sequence A090113 A090114 A090115`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Jan 08 2004`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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