Triangular array T: put T(n,0)=n+1 for all n >= 0 and all other T(n,k)=0; then put T(n,k)=Sum{T(i,j): 0<=j<=i-n+k, n-k<=i<=n}.
A053199
Triangular array T: put T(n,0)=n+1 for all n >= 0 and all other T(n,k)=0; then put T(n,k)=Sum{T(i,j): 0<=j<=i-n+k, n-k<=i<=n}.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =3a(4) =5a(5) =14a(6) =4a(7) =7a(8) =21a(9) =60a(10) =5a(11) =9a(12) =28a(13) =84a(14) =246a(15) =6a(16) =11a(17) =35a(18) =108a(19) =328a(20) =980a(21) =7a(22) =13a(23) =42a(24) =132a(25) =410a(26) =1260a(27) =3824a(28) =8a(29) =15
External references
- oeis: A053199