Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 1,0 1,1 0,-1 or -1,1.
A264572
Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 1,0 1,1 0,-1 or -1,1.
Terms
- a(0) =2a(1) =8a(2) =31a(3) =192a(4) =1130a(5) =8356a(6) =47571a(7) =305844a(8) =1871556a(9) =11815440a(10) =73467099a(11) =457338532a(12) =2850911356a(13) =17771612880a(14) =110773680091a(15) =690026338272
External references
- oeis: A264572