id:A117051 - OEIS Search Results

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Enneagonal numbers for which the sum of the digits is also a enneagonal number.

+0
1

0, 1, 9, 261, 969, 1350, 6666, 7944, 10071, 13299, 17466, 24486, 33369, 36159, 39804, 42846, 46806, 54375, 57921, 66309, 75264, 80484, 111696, 116754, 128544, 135339, 153825, 167316, 175056, 181374, 204369, 226950, 235950, 243276, 252591, 260169 (list; graph; listen)

	OFFSET	`0,3`
	EXAMPLE	`1350 is in the sequence because (1) it is a enneagonal number and (2)the sum of its digits 1+3+5+0=9 is also a enneagonal number`
	CROSSREFS	`Cf. A001106.` `Sequence in context: A072158 A001823 A117796 this_sequence A003387 A081059 A144684` `Adjacent sequences: A117048 A117049 A117050 this_sequence A117052 A117053 A117054`
	KEYWORD	`base,nonn`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 15 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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