Least k whose set of divisors contains exactly n Pythagorean quadruples, or 0 if no such k exists.

Terms

a(0) =42a(1) =84a(2) =168a(3) =252a(4) =672a(5) =756a(6) =420a(7) =504a(8) =2592a(9) =1872a(10) =840a(11) =1008a(12) =1512a(13) =2940a(14) =1680a(15) =2016a(16) =1260a(17) =4536a(18) =3360a(19) =3024a(20) =9450a(21) =4620a(22) =5880a(23) =6552a(24) =9504a(25) =6930a(26) =3780a(27) =8400a(28) =23184a(29) =25704