Numbers n such that 4n + 1, 4n + 2 and 4n + 3 are not squarefree.

Terms

a(0) =211a(1) =420a(2) =722a(3) =906a(4) =2731a(5) =3687a(6) =3962a(7) =4351a(8) =4985a(9) =5505a(10) =5656a(11) =5818a(12) =6162a(13) =6443a(14) =7337a(15) =7562a(16) =7731a(17) =8293a(18) =9175a(19) =9312a(20) =9681a(21) =9861a(22) =10118a(23) =11343a(24) =11918a(25) =11931a(26) =11956a(27) =12093a(28) =12372a(29) =13646