A119152 Triangular numbers composed of digits {2,3,5}.

3, 55, 253, 325, 5253, 255255, 2235555, 2355535, 3252525, 222552253, 225323523253, 33533553332223253, 523355323323222253, 252235353552533225335, 22323332525535322225335, 223533355523232355353232325353525335

Offset

1,1

Comments

a(17) > 10^40. - Tyler Busby, Mar 28 2023

Links

Table of n, a(n) for n=1..16.

Giovanni Resta, Tridigital Triangular Numbers.

Formula

a(n) = A000217(A119153(n)). - Tyler Busby, Mar 28 2023

Crossrefs

Cf. A000217, A053919, A119153. See A119033 for a table of cross-references.

Sequence in context: A268661 A041155 A111483 * A119061 A197094 A156379

Adjacent sequences: A119149 A119150 A119151 * A119153 A119154 A119155

Keyword

nonn,base

Author

Giovanni Resta, May 10 2006

Extensions

a(16) from Tyler Busby, Mar 28 2023

Status

approved