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A117834 Triangular numbers with consecutive digits. 0
0, 1, 3, 6, 10, 21, 45, 78, 210 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Digits can be in ascending or descending order. After 9 comes 0.

Next term, if there is one, has more than 300 digits. - Joshua Zucker, May 11 2006

LINKS

Table of n, a(n) for n=1..9.

CROSSREFS

Cf. A000217.

Sequence in context: A068149 A068709 A068804 * A317857 A220827 A063015

Adjacent sequences:  A117831 A117832 A117833 * A117835 A117836 A117837

KEYWORD

base,more,nonn

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), Apr 30 2006

STATUS

approved

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Last modified April 24 10:44 EDT 2019. Contains 322424 sequences. (Running on oeis4.)