Numbers n such that there are three distinct triples (k, k+n, k+2n) of squares.

Terms

a(0) =3360a(1) =13440a(2) =30240a(3) =43680a(4) =53760a(5) =84000a(6) =120960a(7) =127680a(8) =164640a(9) =174720a(10) =215040a(11) =272160a(12) =336000a(13) =393120a(14) =406560a(15) =483840a(16) =510720a(17) =567840a(18) =658560a(19) =665280a(20) =698880a(21) =756000a(22) =860160a(23) =971040a(24) =1088640a(25) =1092000a(26) =1145760a(27) =1149120a(28) =1212960a(29) =1344000