id:A068621 - OEIS Search Results

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a(1) = 7; a(n+1) = smallest triangular number > a(n) formed by adding at least one digit to a(n).

+0
4

7, 78, 378, 1378, 91378, 7791378, 707914378 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A068618, A068619, A068622, A068623, A068624.` `Sequence in context: A082782 A107047 A045485 this_sequence A133272 A079590 A106110` `Adjacent sequences: A068618 A068619 A068620 this_sequence A068622 A068623 A068624`
	KEYWORD	`base,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 14 2004`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.