Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,0 0,2 -1,-2 or 1,0.
A264522
Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,0 0,2 -1,-2 or 1,0.
Terms
- a(0) =0a(1) =0a(2) =36a(3) =228a(4) =1444a(5) =8018a(6) =44521a(7) =258264a(8) =1498176a(9) =8784648a(10) =51509329a(11) =298721094a(12) =1732390884a(13) =10048882704a(14) =58289410624a(15) =338365016544
External references
- oeis: A264522