Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,3,4 for x=0,1,2,3,4.

A196133

Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,3,4 for x=0,1,2,3,4.

Terms

    a(0) =1a(1) =3a(2) =4a(3) =19a(4) =31a(5) =70a(6) =117a(7) =253a(8) =538a(9) =1169a(10) =2401a(11) =4896a(12) =10179a(13) =21291a(14) =44754a(15) =93367a(16) =194747a(17) =405806a(18) =848007a(19) =1772209a(20) =3704016a(21) =7737207a(22) =16162351a(23) =33766226a(24) =70554991a(25) =147429719a(26) =308053298a(27) =643669403a(28) =1344939023a(29) =2810299720

External references