T(n,k) is the number of n X k 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.
A208408
T(n,k) is the number of n X k 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =5a(4) =15a(5) =5a(6) =15a(7) =182a(8) =187a(9) =15a(10) =51a(11) =2698a(12) =10682a(13) =2795a(14) =51a(15) =187a(16) =41914a(17) =658450a(18) =667478a(19) =43947a(20) =187a(21) =715a(22) =658450a(23) =40883360a(24) =163422914a(25) =42012698a(26) =700075a(27) =715a(28) =2795a(29) =10370330
External references
- oeis: A208408