553591domain: NPropertiesPrimalityPrimeyesAppears in sequencesTriangle in which row n consists of the coefficients in Sum_{m=0..n} x^m * Product_{k=m+1..n} (1-k*x), as read by rows.at n=53A248925a(n) is one of two integer components (with A000254) used in computing the inverse second moment of X+n, where X~Poisson(1).at n=9A381681Prime numbersat n=45596