A119095 Triangular numbers composed of digits {0,8,9}.

990, 809809890, 89909089088809980, 98899080989088808000999800

Offset

1,1

Comments

a(5) > 10^41. - Tyler Busby, Mar 28 2023

Links

Table of n, a(n) for n=1..4.

Giovanni Resta, Tridigital Triangular Numbers.

Formula

a(n) = A000217(A119096(n)). - Tyler Busby, Mar 28 2023

Crossrefs

Cf. A000217, A058456, A119096. See A119033 for a table of cross-references.

Sequence in context: A218133 A295433 A068301 * A119077 A119057 A218401

Adjacent sequences: A119092 A119093 A119094 * A119096 A119097 A119098

Keyword

nonn,base,more

Author

Giovanni Resta, May 10 2006

Status

approved