id:A078377 - OEIS Search Results

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Number of distinct prime factors of numbers which can be written as sum of a positive square and a positive cube.

+0
5

1, 1, 1, 2, 2, 1, 2, 2, 2, 1, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 1, 2, 1, 2, 3, 1, 1, 2, 2, 2, 2, 2, 3, 2, 2, 2, 3, 2, 3, 2, 2, 2, 2, 1, 3, 2, 2, 2, 3, 1, 2, 2, 2, 1, 1, 3, 3, 1, 3, 3, 2, 1, 3, 1, 1, 3, 3, 2, 2, 2, 2, 2, 2, 1, 2, 1, 3, 2, 2, 1, 1, 3, 2, 2, 2, 1, 2, 3, 2, 2, 1, 2, 3, 2, 3, 2 (list; graph; listen)

	OFFSET	`1,4`
	COMMENT	`a(n)=A001221(A055394(n)).`
	CROSSREFS	`Cf. A078378, A078379.` `Sequence in context: A136165 A134193 A085030 this_sequence A105697 A080757 A037196` `Adjacent sequences: A078374 A078375 A078376 this_sequence A078378 A078379 A078380`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 25 2002`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

AT&T Labs Research