A119096 - OEIS

%I #8 Jul 13 2021 01:24:27

%S 44,40244,424049735,14064073448975

%N Numbers k such that the k-th triangular number contains only digits {0,8,9}.

%C Next term exceeds 1.4*10^16.

%H G. Resta, <a href="http://www.numbersaplenty.com/tr/tr089.html">Tridigital Triangular Numbers</a>

%Y Cf. A000217, A119095. See A119034 for a table of cross-references.

%K nonn,base,more

%O 1,1

%A _Giovanni Resta_, May 10 2006