34617313domain: NPropertiesPrimalityPrimeyesAppears in sequencesRow sums of triangular array T: T(j,1) = 1 for ((j-1) mod 6) < 3, else 0; T(j,k) = T(j-1,k-1) + T(j-1,k) for 2 <= k <= j.at n=25A131024Prime numbersat n=2124787