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Search: id:A068624
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A068624 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.


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