T(n,k)=Number of nXk 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
A269289
T(n,k)=Number of nXk 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three no more than once.
Terms
- a(0) =4a(1) =16a(2) =16a(3) =60a(4) =216a(5) =64a(6) =216a(7) =2124a(8) =2592a(9) =256a(10) =756a(11) =19188a(12) =62748a(13) =29160a(14) =1024a(15) =2592a(16) =164556a(17) =1363572a(18) =1698732a(19) =314928a(20) =4096a(21) =8748a(22) =1363572a(23) =27788292a(24) =87559668a(25) =43674876a(26) =3306744a(27) =16384a(28) =29160a(29) =11026764
External references
- oeis: A269289