333170844940domain: NAppears in sequencesS(n,1) + S(n-1,2) + S(n-2,3) + ... + S(n+1-k,k), where k = floor((n+1)/2) and S(i,j) are Stirling numbers of the second kind.at n=22A024427Antidiagonal sums of triangle of Stirling numbers of 2nd kind A048993.at n=24A171367