A119057 Triangular numbers composed of digits {0,2,9}.

990, 2090209222020090, 92209290022092090, 200290202090990220, 222020200990922029290

Offset

1,1

Comments

a(6) > 10^40. - Tyler Busby, Mar 28 2023

Links

Table of n, a(n) for n=1..5.

Giovanni Resta, Tridigital Triangular Numbers.

Formula

a(n) = A000217(A119058(n)). - Michel Marcus, Mar 27 2023

Crossrefs

Cf. A000217, A058428, A119058. See A119033 for a table of cross-references.

Sequence in context: A068301 A119095 A119077 * A218401 A053393 A365598

Adjacent sequences: A119054 A119055 A119056 * A119058 A119059 A119060

Keyword

nonn,base,more

Author

Giovanni Resta, May 10 2006

Status

approved