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A119177 Numbers k such that the k-th triangular number contains only digits {2,6,9}. 2
3, 11, 36, 76, 7741188, 21305723, 4471447856, 24343059348, 6673334543723, 23094123478785548 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..10.
Giovanni Resta, Tridigital Triangular Numbers.
CROSSREFS
Cf. A000217, A119176. See A119034 for a table of cross-references.
Sequence in context: A222286 A119143 A119092 * A213679 A297577 A119126
Adjacent sequences: A119174 A119175 A119176 * A119178 A119179 A119180
KEYWORD
nonn,base,more
AUTHOR
Giovanni Resta, May 10 2006
EXTENSIONS
a(10) from Tyler Busby, Mar 31 2023
STATUS
approved

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Last modified May 21 02:29 EDT 2024. Contains 372720 sequences. (Running on oeis4.)