A119214 Triangular numbers composed of digits {4,6,9}.

6, 66, 496, 666, 946, 4699966666944446964496

Offset: 1

Author

Giovanni Resta, May 10 2006

Keywords

• nonn
• base
• more

Comments

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

Links

• Giovanni Resta, Tridigital Triangular Numbers.

Crossrefs

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

Formula

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