Lesser of 2 successive sphenic numbers (k, k+4) sandwiching 3 consecutive nonsquarefree numbers.

Terms

a(0) =602a(1) =1374a(2) =2274a(3) =2522a(4) =3122a(5) =3282a(6) =4202a(7) =4922a(8) =4958a(9) =4974a(10) =5822a(11) =5885a(12) =6874a(13) =7298a(14) =7674a(15) =9062a(16) =9422a(17) =9474a(18) =10322a(19) =11222a(20) =12590a(21) =13074a(22) =15531a(23) =15722a(24) =16818a(25) =18766a(26) =19131a(27) =19745a(28) =20447a(29) =21535