a(n) is the least prime of the form n^k+n+1 with k>1, or 0 if there is no such prime.

Terms

a(0) =3a(1) =7a(2) =13a(3) =0a(4) =31a(5) =43a(6) =0a(7) =73a(8) =739a(9) =0a(10) =14653a(11) =157a(12) =0a(13) =211a(14) =241a(15) =0a(16) =307a(17) =5851a(18) =0a(19) =421a(20) =463a(21) =0a(23) =601a(24) =0a(25) =457003a(26) =757a(27) =0a(28) =24419a(29) =27031a(30) =0