252595domain: NAppears in sequencesSmallest b > 1 such that b^(p-1) == 1 (mod p^4) for p = prime(n).at n=28A353937G.f.: Sum_{k>=0} x^k * Product_{j=1..2*k} (1 + x^j)/(1 - x^j).at n=32A385088