739751domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that are the concatenation of prime(n) and prime(n+2).at n=28A253245Triangle read by rows. T(n, k) = B(n, n - k + 1) where B(n, k) = k^n * BellPolynomial(n, -1/k) for k > 0, if k = 0 then B(n, k) = k^n.at n=28A350262Prime numbersat n=59513