Triangle T(n,k) = coefficient of x^n in expansion of ((1-sqrt(1-4*x))/((1-x)*2))^k = sum(n>=k, T(n,k) * x^n).
A200965
Triangle T(n,k) = coefficient of x^n in expansion of ((1-sqrt(1-4*x))/((1-x)*2))^k = sum(n>=k, T(n,k) * x^n).
Terms
- a(0) =1a(1) =2a(2) =1a(3) =4a(4) =4a(5) =1a(6) =9a(7) =12a(8) =6a(9) =1a(10) =23a(11) =34a(12) =24a(13) =8a(14) =1a(15) =65a(16) =98a(17) =83a(18) =40a(19) =10a(20) =1a(21) =197a(22) =294a(23) =273a(24) =164a(25) =60a(26) =12a(27) =1a(28) =626a(29) =919
External references
- oeis: A200965