%I #12 Mar 31 2023 02:28:31
%S 7,10,32,714,1025,1287,6712,10849,13285,23885,711129,22595807,
%T 22619825,40641912,715385610,33343322745,332431301950,23785828913825,
%U 32503094884196145
%N Numbers k such that the k-th triangular number contains only digits {2,5,8}.
%H Giovanni Resta, <a href="http://www.numbersaplenty.com/tr/tr258.html">Tridigital Triangular Numbers</a>.
%Y Cf. A000217, A119168. See A119034 for a table of cross-references.
%K nonn,base,more
%O 1,1
%A _Giovanni Resta_, May 10 2006
%E a(19) from _Tyler Busby_, Mar 31 2023