Triangle T(n,k), 0<=k<=n, read by rows defined by: T(n,k) = T(n-1,k-1) + 2*T(n-1,k) + T(n-2,k-2) - T(n-2,k), T(0,0) = 1, T(n,k) = 0 if k < 0 or if n < k.
A102756
Triangle T(n,k), 0<=k<=n, read by rows defined by: T(n,k) = T(n-1,k-1) + 2*T(n-1,k) + T(n-2,k-2) - T(n-2,k), T(0,0) = 1, T(n,k) = 0 if k < 0 or if n < k.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =3a(4) =4a(5) =2a(6) =4a(7) =10a(8) =10a(9) =3a(10) =5a(11) =20a(12) =31a(13) =20a(14) =5a(15) =6a(16) =35a(17) =76a(18) =78a(19) =40a(20) =8a(21) =7a(22) =56a(23) =161a(24) =232a(25) =184a(26) =76a(27) =13a(28) =8a(29) =84
External references
- oeis: A102756