Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(n,k) is the number of k-step closed paths (from origin to origin) in 2-dimensional lattice, using steps (t_1,t_2) (|t_1| + |t_2| = n).
A329078
Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(n,k) is the number of k-step closed paths (from origin to origin) in 2-dimensional lattice, using steps (t_1,t_2) (|t_1| + |t_2| = n).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =0a(5) =1a(6) =1a(7) =4a(8) =0a(9) =1a(10) =1a(11) =0a(12) =8a(13) =0a(14) =1a(15) =1a(16) =36a(17) =24a(18) =12a(19) =0a(20) =1a(21) =1a(22) =0a(23) =216a(24) =0a(25) =16a(26) =0a(27) =1a(28) =1a(29) =400
External references
- oeis: A329078