Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of 2/(1 + sqrt(1 - 4*k*x)).
A290605
Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of 2/(1 + sqrt(1 - 4*k*x)).
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =1a(5) =0a(6) =1a(7) =2a(8) =2a(9) =0a(10) =1a(11) =3a(12) =8a(13) =5a(14) =0a(15) =1a(16) =4a(17) =18a(18) =40a(19) =14a(20) =0a(21) =1a(22) =5a(23) =32a(24) =135a(25) =224a(26) =42a(27) =0a(28) =1a(29) =6
External references
- oeis: A290605