Number of (1+2)X(n+2) arrays of permutations of 0..n*3+5 with each element moved 0 or 1 knight moves and equal numbers of elements advancing and retreating in the array numbered in row major order.
A263707
Number of (1+2)X(n+2) arrays of permutations of 0..n*3+5 with each element moved 0 or 1 knight moves and equal numbers of elements advancing and retreating in the array numbered in row major order.
Terms
- a(0) =49a(1) =475a(2) =3588a(3) =33265a(4) =292865a(5) =2600010a(6) =23355021a(7) =213885703a(8) =1961165204a(9) =18132546551a(10) =168328811813
External references
- oeis: A263707