Number of (n+1) X (4+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,1 -1,2 1,0 or 0,-1.
A264546
Number of (n+1) X (4+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,1 -1,2 1,0 or 0,-1.
Terms
- a(0) =1a(1) =16a(2) =36a(3) =216a(4) =1160a(5) =4640a(6) =23140a(7) =110592a(8) =501828a(9) =2390752a(10) =11231244a(11) =52348752a(12) =246436064a(13) =1155790856a(14) =5415128884a(15) =25420656744a(16) =119225756880a(17) =559133362408
External references
- oeis: A264546