Triangular numbers t(n) with a zeroless decimal representation such that (product of decimal digits of t(n)) / n is an integer.

A307812

Triangular numbers t(n) with a zeroless decimal representation such that (product of decimal digits of t(n)) / n is an integer.

Terms

    a(0) =1a(1) =6a(2) =15a(3) =465a(4) =666a(5) =23436a(6) =93528a(7) =198765a(8) =664128a(9) =1493856a(10) =1786995a(11) =2767128a(12) =2953665a(13) =18292176a(14) =23891328a(15) =44655975a(16) =169878528a(17) =787667895a(18) =859984128a(19) =1934948736a(20) =3333238776a(21) =97844944896a(22) =237295393965a(23) =292957233975a(24) =379244291328

External references