id:A117052 - OEIS Search Results

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Enneagonal numbers for which the product of the digits is also an enneagonal number.

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0, 1, 9, 46, 111, 204, 750, 1089, 1350, 2301, 3075, 3504, 4200, 5500, 6069, 10071, 10450, 10836, 12036, 12450, 15081, 16014, 19500, 20026, 20559, 21099, 22200, 23904, 25075, 27501, 30039, 30691, 31350, 32016, 34056, 34750, 39061, 39804 (list; graph; listen)

	OFFSET	`0,3`
	EXAMPLE	`46 is in the sequence because (1) it is an enneagonal number and (2)the product of its digits 4*6=24 is also an enneagonal number.`
	CROSSREFS	`Cf. A001106.` `Adjacent sequences: A117049 A117050 A117051 this_sequence A117053 A117054 A117055` `Sequence in context: A058824 A050909 A042003 this_sequence A009294 A061620 A001781`
	KEYWORD	`base,nonn`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 15 2006`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

AT&T Labs Research