Triangle read by rows: T(n,k) = n!*(n+k-1)!/((n-k)!*(n-1)!*(k!)^2) for 0 <= k <= n, with T(0,0) = 1.
A123160
Triangle read by rows: T(n,k) = n!*(n+k-1)!/((n-k)!*(n-1)!*(k!)^2) for 0 <= k <= n, with T(0,0) = 1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =3a(6) =1a(7) =9a(8) =18a(9) =10a(10) =1a(11) =16a(12) =60a(13) =80a(14) =35a(15) =1a(16) =25a(17) =150a(18) =350a(19) =350a(20) =126a(21) =1a(22) =36a(23) =315a(24) =1120a(25) =1890a(26) =1512a(27) =462a(28) =1a(29) =49
External references
- oeis: A123160