Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: exp(Sum_{j>=1} (-1)^(j-1)*binomial(-k,j-1)*x^j/j).
A291709
Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: exp(Sum_{j>=1} (-1)^(j-1)*binomial(-k,j-1)*x^j/j).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =2a(9) =1a(10) =1a(11) =1a(12) =3a(13) =6a(14) =1a(15) =1a(16) =1a(17) =4a(18) =13a(19) =24a(20) =1a(21) =1a(22) =1a(23) =5a(24) =22a(25) =73a(26) =120a(27) =1a(28) =1a(29) =1
External references
- oeis: A291709