Triangular array T given by rows: T(n,0)=1 for n >= 0, T(n,1)=1,T(n,2)=2 for n >= 1 and for n >= 2, T(n,k)=T(n-1,k-3)+T(n-1,k-2)+T(n-1,k-1) for 3<=k<=2n-1, T(n,2n)=T(n-1,2n-3)+T(n-1,2n-2).
A027113
Triangular array T given by rows: T(n,0)=1 for n >= 0, T(n,1)=1,T(n,2)=2 for n >= 1 and for n >= 2, T(n,k)=T(n-1,k-3)+T(n-1,k-2)+T(n-1,k-1) for 3<=k<=2n-1, T(n,2n)=T(n-1,2n-3)+T(n-1,2n-2).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =1a(5) =1a(6) =2a(7) =4a(8) =3a(9) =1a(10) =1a(11) =2a(12) =4a(13) =7a(14) =9a(15) =7a(16) =1a(17) =1a(18) =2a(19) =4a(20) =7a(21) =13a(22) =20a(23) =23a(24) =16a(25) =1a(26) =1a(27) =2a(28) =4a(29) =7
External references
- oeis: A027113