590541383domain: NPropertiesPrimalityPrimeyesAppears in sequencesTriangle read by rows based on the Stirling numbers S1: t(n,m)=Sum[(-1)^(n + 1)* StirlingS1[n, j]*(k + 1 - j)^(n - 1), {j, 0, k + 1}].at n=26A152918Prime numbersat n=30856399