1,1

a(n) includes 2 and all primes from A007619[n] Wilson quotients: ((p-1)!+1)/p. Corresponding numbers n such that ((n-1)!+1)/n is prime are listed in A050299[n] = {1, 5, 7, 11, 29, 773, 1321, 2621, ...}. a(6) has 1893 digits. a(7) has 3545 digits. a(8) has 7817 digits.

Cf. A050299, A007619.

Sequence in context: A027720 A132482 A136106 this_sequence A023263 A070855 A041237

Adjacent sequences: A122693 A122694 A122695 this_sequence A122697 A122698 A122699

nonn

Alexander Adamchuk (alex(AT)kolmogorov.com), Sep 22 2006

The next term is too large to include.