T(n,k) = Number of n X k 0..4 arrays with each element equal to the number of its horizontal and vertical neighbors less than itself.
A196430
T(n,k) = Number of n X k 0..4 arrays with each element equal to the number of its horizontal and vertical neighbors less than itself.
Terms
- a(0) =1a(1) =3a(2) =3a(3) =5a(4) =23a(5) =5a(6) =11a(7) =123a(8) =123a(9) =11a(10) =26a(11) =809a(12) =1377a(13) =809a(14) =26a(15) =55a(16) =5274a(17) =27583a(18) =27583a(19) =5274a(20) =55a(21) =119a(22) =33923a(23) =452252a(24) =1436945a(25) =452252a(26) =33923a(27) =119a(28) =263a(29) =219807
External references
- oeis: A196430