id:A134942 - OEIS Search Results

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Numbers n such that there exists no number k with k-P(k) = n, where P(k) is the product of digits of k written in base 1O.

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1, 2, 3, 4, 5, 6, 7, 8, 21, 23, 27, 29, 32, 33, 36, 39, 41, 43, 44, 47, 48, 49, 51, 53, 54, 56, 57, 61, 62, 63, 65, 67, 68, 69, 71, 72, 75, 76, 77, 78, 79, 81, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 121, 123, 127, 129, 132, 133, 136, 139, 141, 143 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Obviously no number containing a zero digit is in the sequence.`
	EXAMPLE	`For 0<=p<=9, p-P(p)=0, hence 0 is in the sequence` `It's easy to see that if p has 2 digits or more the difference p-P(p) has at least 2 digits, hence 1 to 9 are in the sequence`
	CROSSREFS	`Adjacent sequences: A134939 A134940 A134941 this_sequence A134943 A134944 A134945` `Sequence in context: A039127 A024650 A037343 this_sequence A053408 A096986 A031097`
	KEYWORD	`easy,nonn,base`
	AUTHOR	`Philippe Lallouet (philip.lallouet(AT)orange.fr), Feb 01 2008`

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Last modified January 8 02:43 EST 2009. Contains 152824 sequences.

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