Smallest triangular number which is a multiple (>1) of the n-th triangular number.

Terms

a(0) =3a(1) =6a(2) =36a(3) =120a(4) =45a(5) =105a(6) =1176a(7) =2016a(8) =630a(9) =990a(10) =528a(11) =780a(12) =3003a(13) =210a(14) =3240a(15) =32640a(16) =9180a(17) =11628a(18) =2850a(19) =630a(20) =3003a(21) =26565a(22) =16836a(23) =20100a(24) =44850a(25) =52650a(26) =17766a(27) =20706a(28) =10440a(29) =12090