Antidiagonal sums of triangular array T: T(j,1) = 1 for ((j-1) mod 6) < 3, else 0; T(j,k) = T(j-1,k-1) + T(j-1,k) for 2 <= k <= j.
A131025
Antidiagonal sums of triangular array T: T(j,1) = 1 for ((j-1) mod 6) < 3, else 0; T(j,k) = T(j-1,k-1) + T(j-1,k) for 2 <= k <= j.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =2a(4) =5a(5) =3a(6) =9a(7) =6a(8) =16a(9) =11a(10) =27a(11) =22a(12) =50a(13) =50a(14) =101a(15) =114a(16) =215a(17) =255a(18) =471a(19) =552a(20) =1024a(21) =1145a(22) =2169a(23) =2290a(24) =4460a(25) =4460a(26) =8921a(27) =8556a(28) =17477a(29) =16383
External references
- oeis: A131025