A(n,k) = n! * Laguerre(n,-k); square array A(n,k), n>=0, k>=0, read by antidiagonals.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =3a(8) =7a(9) =6a(10) =1a(11) =4a(12) =14a(13) =34a(14) =24a(15) =1a(16) =5a(17) =23a(18) =86a(19) =209a(20) =120a(21) =1a(22) =6a(23) =34a(24) =168a(25) =648a(26) =1546a(27) =720a(28) =1a(29) =7