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%I #7 Oct 09 2023 03:21:01
%S 0,1,3,6,10,21,45,78,210
%N Triangular numbers with consecutive digits.
%C Digits can be in ascending or descending order. After 9 comes 0.
%C Next term, if there is one, has more than 300 digits. - _Joshua Zucker_, May 11 2006
%C Terms correspond to (some) integral points on a finite number of Mordell curves. Thus there is only a finite number of terms. It is likely that no other terms besides those listed exist. - _Max Alekseyev_, Oct 08 2023
%Y Cf. A000217.
%K base,fini,more,nonn
%O 1,3
%A Luc Stevens (lms022(AT)yahoo.com), Apr 30 2006
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