Smallest triangular number having n^2 as divisor.

Terms

a(0) =1a(1) =28a(2) =36a(3) =496a(4) =300a(5) =36a(6) =1176a(7) =8128a(8) =3240a(9) =300a(10) =7260a(11) =2016a(12) =14196a(13) =1176a(14) =4950a(15) =130816a(16) =41616a(17) =3240a(18) =64980a(19) =25200a(20) =4851a(21) =7260a(22) =139656a(23) =131328a(24) =195000a(25) =14196a(26) =265356a(27) =270480a(28) =353220a(29) =25200