A088377 - OEIS

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A088377

(Smallest prime-factor of n)^2.

1, 4, 9, 4, 25, 4, 49, 4, 9, 4, 121, 4, 169, 4, 9, 4, 289, 4, 361, 4, 9, 4, 529, 4, 25, 4, 9, 4, 841, 4, 961, 4, 9, 4, 25, 4, 1369, 4, 9, 4, 1681, 4, 1849, 4, 9, 4, 2209, 4, 49, 4, 9, 4, 2809, 4, 25, 4, 9, 4, 3481, 4, 3721, 4, 9, 4, 25, 4, 4489, 4, 9, 4, 5041, 4, 5329, 4, 9, 4 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`a(n) = A000290(A020639(n)).`
	LINKS	`Eric Weisstein's World of Mathematics, Least Prime Factor` `Eric Weisstein's World of Mathematics, Square Number`
	CROSSREFS	`Cf. A088378, A088379.` `Cf. A068319.` `Sequence in context: A131016 A204996 A061369 * A066048 A103164 A178147` `Adjacent sequences: A088374 A088375 A088376 * A088378 A088379 A088380`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 28 2003`

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Last modified February 14 08:37 EST 2012. Contains 205614 sequences.