id:A095136 - OEIS Search Results

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Number of distinct prime factors of A095134(n).

+0
1

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

	OFFSET	`1,12`
	MATHEMATICA	`PrimeFactors[n_] := Flatten[ Table[ #[[1]], {1} ] & /@ FactorInteger[n]]; f[n_] := Product[ Prime[i], {i, 2, n, 2}] + Product[ Prime[i], {i, 1, n, 2}]; f[1] = 2; Table[ Length[ PrimeFactors[ f[n]]], {n, 80}]`
	CROSSREFS	`Cf. A095134.` `Adjacent sequences: A095133 A095134 A095135 this_sequence A095137 A095138 A095139` `Sequence in context: A099244 A014671 A029365 this_sequence A105540 A057043 A070091`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), May 27 2004`

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.

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