A119189 - OEIS

A119189

Numbers k such that the k-th triangular number contains only digits {3,5,7}.

2, 10, 3386897, 10367022, 25898098514 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Next term exceeds 1.4*10^16.`
	LINKS	`Table of n, a(n) for n=1..5.` `G. Resta, Tridigital Triangular Numbers`
	CROSSREFS	`Cf. A000217, A119188. See A119034 for a table of cross-references.` `Sequence in context: A027735 A085698 A057095 * A309862 A260756 A252707` `Adjacent sequences: A119186 A119187 A119188 * A119190 A119191 A119192`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Giovanni Resta, May 10 2006`
	STATUS	`approved`

Last modified February 7 02:40 EST 2023. Contains 360111 sequences. (Running on oeis4.)