Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.
A264881
Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.
Terms
- a(0) =2a(1) =0a(2) =20a(3) =12a(4) =572a(5) =2348a(6) =22152a(7) =129230a(8) =915192a(9) =5625202a(10) =37271957a(11) =233347958a(12) =1512344735a(13) =9550825980a(14) =61315204660a(15) =389091647972
External references
- oeis: A264881