408741333domain: NAppears in sequencesStirling numbers of second kind, S(n,7).at n=8A000771Stirling numbers of second kind S2(15,n).at n=6A011564a(n) = Stirling2(2*n+1, n).at n=6A247238a(n) = Stirling2(n, floor(n/2)).at n=15A343279