Smallest prime ending in prime(n) and == 1 (mod prime(n)), or 0 if no such prime exists.

Terms

a(0) =0a(1) =13a(2) =0a(3) =127a(4) =2311a(5) =313a(6) =4217a(7) =419a(8) =21023a(9) =929a(10) =13331a(11) =30637a(12) =5741a(13) =16943a(14) =10247a(15) =15053a(16) =3659a(17) =21961a(18) =13267a(19) =12071a(20) =4673a(21) =22279a(22) =4483a(23) =43789a(24) =25997a(25) =414101a(26) =24103a(27) =188107a(28) =132109a(29) =93113