8553247domain: NPropertiesPrimalityPrimeyesAppears in sequencesLet b(k) = A164555(k)/A027642(k), the sequence of "original" Bernoulli numbers with -1 instead of A164555(0)=1; then a(n) = numerator of the n-th term of the binomial transform of the b(k) sequence.at n=26A235774Prime numbersat n=574498