Number of nonintersecting (or self-avoiding) rook paths of length 2n+2 joining opposite corners of an n X n grid.
A257888
Number of nonintersecting (or self-avoiding) rook paths of length 2n+2 joining opposite corners of an n X n grid.
Terms
- a(0) =4a(1) =36a(2) =224a(3) =1200a(4) =5940a(5) =28028a(6) =128128a(7) =572832a(8) =2519400a(9) =10943240a(10) =47070144a(11) =200880160a(12) =851809140a(13) =3592795500a(14) =15085939200a(15) =63102895680a(16) =263083395960
External references
- oeis: A257888