Square array read by antidiagonals upwards: T(n,k) is the smallest k-digit prime p such that nextprime(p) is a substring of p^n; or -1 if no such prime exists, n>1, k>0.

A383607

Square array read by antidiagonals upwards: T(n,k) is the smallest k-digit prime p such that nextprime(p) is a substring of p^n; or -1 if no such prime exists, n>1, k>0.

Terms

    a(0) =-1a(1) =-1a(2) =23a(3) =-1a(4) =11a(5) =113a(6) =2a(7) =37a(8) =101a(9) =1123a(10) =7a(11) =17a(12) =487a(13) =2239a(14) =-1a(15) =5a(16) =47a(17) =-1a(18) =5659a(19) =34297a(20) =200003a(21) =3a(22) =13a(23) =-1a(24) =2399a(25) =91801a(26) =535487a(27) =-1a(28) =-1a(29) =31

External references