Triangle read by rows. Stirling set numbers of order 2, T(n, n) = 1, T(n, k) = 0 if k < 0 or k > n, otherwise T(n, k) = T(n-1, k-1) + k^2*T(n-1, k), for 0 <= k <= n.
A269945
Triangle read by rows. Stirling set numbers of order 2, T(n, n) = 1, T(n, k) = 0 if k < 0 or k > n, otherwise T(n, k) = T(n-1, k-1) + k^2*T(n-1, k), for 0 <= k <= n.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =1a(8) =5a(9) =1a(10) =0a(11) =1a(12) =21a(13) =14a(14) =1a(15) =0a(16) =1a(17) =85a(18) =147a(19) =30a(20) =1a(21) =0a(22) =1a(23) =341a(24) =1408a(25) =627a(26) =55a(27) =1a(28) =0a(29) =1
External references
- oeis: A269945