Equals two maps: number of nX2 binary arrays indicating the locations of corresponding elements equal to exactly two of their king-move neighbors in a random 0..3 nX2 array.
A220339
Equals two maps: number of nX2 binary arrays indicating the locations of corresponding elements equal to exactly two of their king-move neighbors in a random 0..3 nX2 array.
Terms
- a(0) =1a(1) =5a(2) =24a(3) =89a(4) =389a(5) =1570a(6) =6413a(7) =25744a(8) =103229a(9) =412081a(10) =1643706a(11) =6548560a(12) =26080372a(13) =103836793a(14) =413362985a(15) =1645415613a(16) =6549395074a(17) =26068520679a(18) =103759005831a(19) =412983036406
External references
- oeis: A220339