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A307220 Record values in A039951. 1

%I

%S 1093,66161,46145917691

%N Record values in A039951.

%F a(n) = A039951(A278611(n)).

%e For n = 2: The second prime p that is the smallest base-b Wieferich prime of a record size among integers b > 1 is 66161 for b = 6, so a(2) = 66161.

%o (PARI) smallest_w_prime(n) = forprime(p=1, , if(Mod(n, p^2)^(p-1)==1, return(p)))

%o my(r=0, b=2, swp=0); while(1, swp=smallest_w_prime(b); if(swp > r, print1(swp, ", "); r=swp); b++)

%Y Cf. A039951, A278611.

%K nonn,hard,more,bref

%O 1,1

%A _Felix Fröhlich_, Mar 29 2019

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Last modified June 17 19:57 EDT 2021. Contains 345085 sequences. (Running on oeis4.)