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A119156 Triangular numbers composed of digits {2,3,8}. 2
3, 28, 3828, 828828, 388333828828, 223832333328828, 332828222833288828828, 28388332838238232223328828 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Next entry must be greater than 10^37.

LINKS

Table of n, a(n) for n=1..8.

G. Resta, Tridigital Triangular Numbers

PROG

(Python)

klimit = 10**6

A000217 = (k*(k+1)//2 for k in range(klimit)) # generator

print([m for m in A000217 if set(str(m)) <= set("238")]) # Michael S. Branicky, Mar 28 2021

CROSSREFS

Cf. A000217, A119157. See A119033 for a table of cross-references.

Sequence in context: A196735 A208438 A122891 * A175979 A096621 A143234

Adjacent sequences:  A119153 A119154 A119155 * A119157 A119158 A119159

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

EXTENSIONS

Lower bound for the next term updated by Max Alekseyev, May 21 2009

STATUS

approved

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Last modified October 16 05:41 EDT 2021. Contains 348035 sequences. (Running on oeis4.)