T(n,k) = number of (n+1) X (k+1) 0..3 arrays with equal numbers of 2 X 2 subblocks with sum over 6 and with sum under 6.
A183756
T(n,k) = number of (n+1) X (k+1) 0..3 arrays with equal numbers of 2 X 2 subblocks with sum over 6 and with sum under 6.
Terms
- a(0) =44a(1) =888a(2) =888a(3) =8816a(4) =35524a(5) =8816a(6) =193360a(7) =1739668a(8) =1739668a(9) =193360a(10) =2176856a(11) =104016508a(12) =347812760a(13) =104016508a(14) =2176856a(15) =36036868a(16) =5856201636a(17) =81384279968a(18) =81384279968a(19) =5856201636a(20) =36036868a(21) =491791680a(22) =341710892328
External references
- oeis: A183756