Smallest b such that the k consecutive primes starting with prime(n) are all base-b Wieferich primes, i.e., satisfy b^(p-1) == 1 (mod p^2). Square array A(n, k), read by antidiagonals downwards.
A286816
Smallest b such that the k consecutive primes starting with prime(n) are all base-b Wieferich primes, i.e., satisfy b^(p-1) == 1 (mod p^2). Square array A(n, k), read by antidiagonals downwards.
Terms
- a(0) =5a(1) =17a(2) =8a(3) =449a(4) =26a(5) =7a(6) =557a(7) =226a(8) =18a(9) =18a(10) =19601a(11) =1207a(12) =1207a(13) =148a(14) =3a(15) =132857a(16) =54568a(17) =1451a(18) =606a(19) =239a(20) =19a(21) =4486949a(22) =2006776a(23) =13543a(24) =13543a(25) =3469a(26) =249a(27) =38a(28) =126664001a(29) =20950343
External references
- oeis: A286816