id:A128530 - OEIS Search Results

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Nontrivial products of three lucky numbers.

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27, 63, 81, 117, 135, 147, 189, 225, 243, 273, 279, 315, 333, 343, 351, 387, 405, 441, 459, 507, 525, 567, 585, 603, 637, 651, 675, 729, 735, 777, 819, 837, 903, 945, 999, 1053, 1029, 1071, 1161, 1183, 1215, 1323, 1365, 1377, 1407, 1521 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`This is to lucky numbers (A000959) greater than 1 as A014612 (numbers that are divisible by exactly 3 primes, counted with multiplicity) are to primes. This is to 3 as A128462 (Nontrivial products of two lucky numbers) is to 2.`
	FORMULA	`{A000959(i)A000959(j)A000959(k) for i, j, k > 1}.`
	CROSSREFS	`Cf. A000959, A001358, A128462.` `Sequence in context: A157500 A107580 A138610 this_sequence A044129 A044510 A088248` `Adjacent sequences: A128527 A128528 A128529 this_sequence A128531 A128532 A128533`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jonathan Vos Post (jvospost3(AT)gmail.com), May 07 2007`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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