T(n,k) = number of n X k arrays of occupancy after each element moves to some horizontal or vertical neighbor, with no occupancy greater than 2.
A221139
T(n,k) = number of n X k arrays of occupancy after each element moves to some horizontal or vertical neighbor, with no occupancy greater than 2.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =2a(4) =9a(5) =2a(6) =4a(7) =49a(8) =49a(9) =4a(10) =8a(11) =289a(12) =656a(13) =289a(14) =8a(15) =16a(16) =1681a(17) =12544a(18) =12544a(19) =1681a(20) =16a(21) =32a(22) =9801a(23) =200072a(24) =643204a(25) =200072a(26) =9801a(27) =32a(28) =64a(29) =57121
External references
- oeis: A221139