Triangular numbers that are the product of 4 distinct triangular numbers greater than 1.

Terms

a(0) =25200a(1) =97020a(2) =145530a(3) =499500a(4) =673380a(5) =749700a(6) =839160a(7) =1185030a(8) =1445850a(9) =1786995a(10) =1873080a(11) =2031120a(12) =2049300a(13) =2162160a(14) =2821500a(15) =3444000a(16) =3646350a(17) =4250070a(18) =4573800a(19) =4915680a(20) =4991220a(21) =5364450a(22) =5512860a(23) =6193440a(24) =11594520a(25) =11763675a(26) =12748725a(27) =13857480a(28) =14340690a(29) =15481830