id:A068624 - OEIS Search Results

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a(1) = 9; a(n+1) = smallest triangular number > a(n) formed by adding at least one digit to a(n).

+0
4

9, 91, 1891, 18915, 1989015, 199890015 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A068618, A068619, A068621, A068622, A068623.` `Sequence in context: A123792 A022520 A020236 this_sequence A034666 A022505 A007403` `Adjacent sequences: A068621 A068622 A068623 this_sequence A068625 A068626 A068627`
	KEYWORD	`base,more,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 25 2002`
	EXTENSIONS	`3 more terms from Ray G. Opao (1260(AT)email.com), Dec 09 2004`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.