Triangular numbers composed of digits {1,4,9}.

A119130

Triangular numbers composed of digits {1,4,9}.

Terms

    a(0) =1a(1) =91a(2) =49141a(3) =144991a(4) =94414411a(5) =941194191a(6) =1194944941a(7) =491919414441

External references