A098002 - OEIS

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A098002

Sum of squares of distinct prime divisors p of n, where each p <= sqrt(n).

0, 0, 0, 4, 0, 4, 0, 4, 9, 4, 0, 13, 0, 4, 9, 4, 0, 13, 0, 4, 9, 4, 0, 13, 25, 4, 9, 4, 0, 38, 0, 4, 9, 4, 25, 13, 0, 4, 9, 29, 0, 13, 0, 4, 34, 4, 0, 13, 49, 29, 9, 4, 0, 13, 25, 53, 9, 4, 0, 38, 0, 4, 58, 4, 25, 13, 0, 4, 9, 78, 0, 13, 0, 4, 34, 4, 49, 13, 0, 29, 9, 4, 0, 62, 25, 4, 9, 4, 0, 38, 49 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	EXAMPLE	`2 and 3 are the distinct prime divisors of 12 and both 2 and 3 are <= squareroot of 12, so a(12) = 2^2 + 3^2 = 13.`
	CROSSREFS	`Cf. A097974.` `Sequence in context: A010675 A035673 A035638 * A035622 A112919 A019201` `Adjacent sequences: A097999 A098000 A098001 * A098003 A098004 A098005`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet Sep 08 2004`
	EXTENSIONS	`More terms from John W. Layman (layman(AT)math.vt.vdu), Sep 14 2004`

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Last modified February 17 18:15 EST 2012. Contains 206061 sequences.