Triangle read by rows, T(n, k) = [x^k](Sum_{k=0..n}(-1)^(n-k)*Stirling2(n, k)*k!* x^k)^2, for 0 <= k <= 2n.
A290696
Triangle read by rows, T(n, k) = [x^k](Sum_{k=0..n}(-1)^(n-k)*Stirling2(n, k)*k!* x^k)^2, for 0 <= k <= 2n.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =1a(4) =0a(5) =0a(6) =1a(7) =-4a(8) =4a(9) =0a(10) =0a(11) =1a(12) =-12a(13) =48a(14) =-72a(15) =36a(16) =0a(17) =0a(18) =1a(19) =-28a(20) =268a(21) =-1056a(22) =1968a(23) =-1728a(24) =576a(25) =0a(26) =0a(27) =1a(28) =-60a(29) =1200
External references
- oeis: A290696