A119192 Triangular numbers composed of digits {3,5,9}.

3, 55, 595, 5995, 33533955, 5939355555, 9993335593335, 535555935535935, 599593353353393939939955, 595993553593935939553359535599399555

Offset

1,1

Comments

a(11) > 10^39. - Tyler Busby, Mar 29 2023

Links

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

Giovanni Resta, Tridigital Triangular Numbers.

Formula

a(n) = A000217(A119193(n)).

Crossrefs

Cf. A000217, A119193. See A119033 for a table of cross-references.

Sequence in context: A119061 A197094 A156379 * A103134 A235534 A300992

Adjacent sequences: A119189 A119190 A119191 * A119193 A119194 A119195

Keyword

nonn,base,more

Author

Giovanni Resta, May 10 2006

Extensions

a(10) from Max Alekseyev, May 21 2011

Status

approved