id:A035531 - OEIS Search Results

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a(n) = A000120(n) + A001221(n) - 1.

+0
1

0, 1, 2, 1, 2, 3, 3, 1, 2, 3, 3, 3, 3, 4, 5, 1, 2, 3, 3, 3, 4, 4, 4, 3, 3, 4, 4, 4, 4, 6, 5, 1, 3, 3, 4, 3, 3, 4, 5, 3, 3, 5, 4, 4, 5, 5, 5, 3, 3, 4, 5, 4, 4, 5, 6, 4, 5, 5, 5, 6, 5, 6, 7, 1, 3, 4, 3, 3, 4, 5, 4, 3, 3, 4, 5, 4, 5, 6, 5, 3, 3, 4, 4, 5, 5, 5, 6, 4, 4, 6, 6, 5, 6, 6, 7, 3, 3, 4, 5, 4, 4, 6, 5, 4, 6, 5, 5, 5, 5, 7, 7 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`G.f.: Sum a(n) x^n = Sum A000120(p)*x^p/(1-x^p), p = prime.`
	CROSSREFS	`Sequence in context: A136624 A033763 A033803 this_sequence A118977 A071766 A007305` `Adjacent sequences: A035528 A035529 A035530 this_sequence A035532 A035533 A035534`
	KEYWORD	`nonn,easy`
	AUTHOR	`Daniele Parisse (daniele.parisse(AT)m.dasa.de)`
	EXTENSIONS	`More terms from David W. Wilson (davidwwilson(AT)comcast.net).`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

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