852647040domain: NAppears in sequencesCoefficients of polynomials (n-1)!*P(n,k), P(n,k) = Sum_{i=0..n} Stirling2(n,i)*binomial(k+i-1,k).at n=44A059604The exponential limit of arctanh (odd indices only).at n=4A320959a(n) = (-1)^(n-1)*(n-1)!*Sum_{i=0..n} Stirling2(n, i) if n > 0 and 0 otherwise.at n=9A320962