Numbers k with d digits such that all digits of k and the last d+1 digits of k^2 are prime.

Terms

a(0) =5a(1) =35a(2) =235a(3) =335a(4) =2335a(5) =3335a(6) =23335a(7) =32335a(8) =33335a(9) =72335a(10) =233335a(11) =323335a(12) =333335a(13) =372335a(14) =572335a(15) =723335a(16) =2333335a(17) =2372335a(18) =2723335a(19) =3233335a(20) =3323335a(21) =3333335a(22) =3572335a(23) =3723335a(24) =7233335a(25) =7323335a(26) =7372335a(27) =7572335a(28) =22372335a(29) =23333335