Smallest prime of the form n^k-(n-1) or 0 if no such prime exists.

Terms

a(0) =3a(1) =7a(2) =13a(3) =3121a(4) =31a(5) =43a(6) =549755813881a(7) =73a(8) =991a(9) =1321a(10) =248821a(11) =157a(12) =2731a(13) =211a(14) =241a(16) =307a(17) =6841a(19) =421a(20) =463a(22) =331753a(23) =601a(24) =17551a(26) =757