Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 1,0 1,1 0,-1 or -1,1.
A264564
Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 1,0 1,1 0,-1 or -1,1.
Terms
- a(0) =1a(1) =4a(2) =10a(3) =31a(4) =79a(5) =224a(6) =646a(7) =1784a(8) =5010a(9) =14026a(10) =39283a(11) =110214a(12) =308476a(13) =864321a(14) =2421872a(15) =6784237a(16) =19008032a(17) =53250952a(18) =149186453a(19) =417966045a(20) =1170955616a(21) =3280543940a(22) =9190733824a(23) =25748605578a(24) =72137045260a(25) =202098106485a(26) =566195445452
External references
- oeis: A264564