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A119182
Triangular numbers composed of digits {3,4,5}.
2
3, 45, 55, 435, 34453, 455535, 3355345, 3544453, 45453345, 334434453, 355444453, 3433345545, 4544333445, 5435334453, 35554444453, 44555453355, 3555544444453, 53443433535355, 355555444444453, 454555345444453, 5355435453444453, 35455445544444555
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..22.
Giovanni Resta, Tridigital Triangular Numbers
FORMULA
a(n) = A000217(A119183(n)).
CROSSREFS
Cf. A000217, A053937, A119183. See A119033 for a table of cross-references.
Sequence in context: A212999 A103980 A101236 * A178337 A161589 A360966
Adjacent sequences: A119179 A119180 A119181 * A119183 A119184 A119185
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, May 10 2006
EXTENSIONS
a(21)-a(22) from Tyler Busby, Mar 24 2023
STATUS
approved

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Last modified November 7 10:03 EST 2024. Contains 377533 sequences.
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