Triangle read by rows, T(n, k) = Sum_{j=0..n} (-1)^(n-j)*C(-j, -n)*S2(k, j), S2 the Stirling set numbers A048993, for n >= 0 and 0 <= k <= n.
A271701
Triangle read by rows, T(n, k) = Sum_{j=0..n} (-1)^(n-j)*C(-j, -n)*S2(k, j), S2 the Stirling set numbers A048993, for n >= 0 and 0 <= k <= n.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =0a(7) =1a(8) =3a(9) =8a(10) =0a(11) =1a(12) =4a(13) =13a(14) =41a(15) =0a(16) =1a(17) =5a(18) =19a(19) =69a(20) =252a(21) =0a(22) =1a(23) =6a(24) =26a(25) =106a(26) =431a(27) =1782a(28) =0a(29) =1
External references
- oeis: A271701