T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock.
A236354
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock.
Terms
- a(0) =81a(1) =462a(2) =462a(3) =2588a(4) =3684a(5) =2588a(6) =14952a(7) =27836a(8) =27836a(9) =14952a(10) =86800a(11) =220560a(12) =266600a(13) =220560a(14) =86800a(15) =498976a(16) =1773948a(17) =2706844a(18) =2706844a(19) =1773948a(20) =498976a(21) =2868608a(22) =14076412a(23) =28890754a(24) =37560184a(25) =28890754a(26) =14076412a(27) =2868608a(28) =16528896a(29) =111309712
External references
- oeis: A236354