A119176 - OEIS

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A119176

Triangular numbers composed of digits {2,6,9}.

6, 66, 666, 2926, 29962999696266, 226966926929226, 9996922966699222296, 296292269222296622226, 22266696966226666966622226, 266669269626696962299266226222926

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OFFSET

1,1

COMMENTS

a(11) > 10^40. - Tyler Busby, Mar 28 2023

LINKS

Table of n, a(n) for n=1..10.

Giovanni Resta, Tridigital Triangular Numbers.

FORMULA

a(n) = A000217(A119177(n)). - Tyler Busby, Mar 28 2023

CROSSREFS

Cf. A000217, A053931, A119177. See A119033 for a table of cross-references.

Sequence in context: A119142 A119091 A119100 * A155630 A119125 A137120

Adjacent sequences: A119173 A119174 A119175 * A119177 A119178 A119179

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

EXTENSIONS

a(10) from Tyler Busby, Mar 28 2023

STATUS

approved