Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,0 1,1 0,-1 -1,1 or 0,-2.
A264238
Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,0 1,1 0,-1 -1,1 or 0,-2.
Terms
- a(0) =8a(1) =21a(2) =89a(3) =296a(4) =1105a(5) =3897a(6) =14128a(7) =50533a(8) =181937a(9) =652944a(10) =2346977a(11) =8429681a(12) =30288280a(13) =108807669a(14) =390915337a(15) =1404388408a(16) =5045461169a(17) =18126337449a(18) =65121053504a(19) =233954670533a(20) =840509324641
External references
- oeis: A264238