588153930domain: NAppears in sequencesDenominators of r(n) = r(n-1) + r(n-2) + B_(n-2), where B_n is the n-th Bernoulli number A027641(n)/A027642(n).at n=31A228151a(n) = product of prohibited prime factors of A090252(n).at n=16A355057Numbers of the form A002110(k)/prime(i); i = 2..k-1; sorted.at n=32A372666