Numbers k such that k concatenated with k+1, k+2, k+3 is prime.

Terms

a(0) =4a(1) =14a(2) =20a(3) =34a(4) =58a(5) =64a(6) =118a(7) =140a(8) =148a(9) =176a(10) =196a(11) =218a(12) =220a(13) =236a(14) =238a(15) =268a(16) =278a(17) =286a(18) =316a(19) =334a(20) =374a(21) =386a(22) =398a(23) =428a(24) =430a(25) =436a(26) =446a(27) =460a(28) =470a(29) =496