1/20 of the number of (n+1) X 6 0..4 arrays with every 2X2 subblock strictly increasing clockwise or counterclockwise with one decrease.
A183715
1/20 of the number of (n+1) X 6 0..4 arrays with every 2X2 subblock strictly increasing clockwise or counterclockwise with one decrease.
Terms
- a(0) =70a(1) =559a(2) =4012a(3) =30113a(4) =224640a(5) =1683197a(6) =12606120a(7) =94463507a(8) =707826798a(9) =5304230928a(10) =39748015308a(11) =297860692491
External references
- oeis: A183715