id:A118556 - OEIS Search Results

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Lucky numbers for which the product of the digits is also a lucky number.

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1, 3, 7, 9, 13, 31, 33, 37, 73, 79, 111, 133, 135, 171, 331, 357, 535, 537, 553, 717, 735, 739, 937, 1117, 1155, 1179, 1197, 1357, 1395, 1711, 1731, 1771, 3111, 3171, 3175, 3571, 3915, 3951, 3999, 5137, 5139, 5151, 5371, 5377, 5713, 5737, 5913, 5997, 7111 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`79 is in the sequence because (1) it is a lucky number and (2) the product of its digits 7*9=63 is also a lucky number.`
	CROSSREFS	`Cf. A000959.` `Sequence in context: A110575 A032664 A166733 this_sequence A110872 A032424 A026175` `Adjacent sequences: A118553 A118554 A118555 this_sequence A118557 A118558 A118559`
	KEYWORD	`base,nonn`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), May 07 2006`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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