A119214 - OEIS

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A119214

Triangular numbers composed of digits {4,6,9}.

2

6, 66, 496, 666, 946, 4699966666944446964496

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OFFSET

1,1

COMMENTS

a(7) > 10^40. - Tyler Busby, Mar 29 2023

LINKS

Table of n, a(n) for n=1..6.

Giovanni Resta, Tridigital Triangular Numbers.

FORMULA

a(n) = A000217(A119215(n)). - Michel Marcus, Mar 27 2023

CROSSREFS

Cf. A000217, A053961, A119215. See A119033 for a table of cross-references.

Sequence in context: A249639 A163699 A062184 * A075138 A227164 A043041

Adjacent sequences: A119211 A119212 A119213 * A119215 A119216 A119217

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

STATUS

approved