Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,1 0,-1 0,2 1,0 or -1,0.
A264258
Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,1 0,-1 0,2 1,0 or -1,0.
Terms
- a(0) =9a(1) =33a(2) =157a(3) =1124a(4) =5468a(5) =32361a(6) =181644a(7) =1005279a(8) =5712287a(9) =31908805a(10) =179364032a(11) =1008041332a(12) =5656064297a(13) =31779206260a(14) =178441753729
External references
- oeis: A264258