Numbers ending in 1, 3, 7 or 9 such that either prepending or following them by one digit doesn't produce a prime.

A124666

Numbers ending in 1, 3, 7 or 9 such that either prepending or following them by one digit doesn't produce a prime.

Terms

    a(0) =891a(1) =921a(2) =1029a(3) =1037a(4) =1653a(5) =1763a(6) =1857a(7) =2427a(8) =2513a(9) =2519a(10) =2607a(11) =3111a(12) =3193a(13) =3213a(14) =3501a(15) =3519a(16) =3707a(17) =3953a(18) =4227a(19) =4459a(20) =4599a(21) =4689a(22) =4803a(23) =4863a(24) =5019a(25) =5043a(26) =5047a(27) =5397a(28) =5459a(29) =5489

External references