Number of (n+1) X (4+1) arrays of permutations of 0..n*5+4 with each element having directed index change 1,0 0,-1 1,2 or -1,1.
A264579
Number of (n+1) X (4+1) arrays of permutations of 0..n*5+4 with each element having directed index change 1,0 0,-1 1,2 or -1,1.
Terms
- a(0) =1a(1) =10a(2) =28a(3) =104a(4) =505a(5) =2144a(6) =8185a(7) =33056a(8) =141037a(9) =570758a(10) =2282482a(11) =9418808a(12) =38665282a(13) =156604130a(14) =638555695a(15) =2615136620a(16) =10661366332a(17) =43431404510a(18) =177359065069a(19) =724008744080
External references
- oeis: A264579