Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,0,1 for x=0,1,2,3,4.
A197085
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,0,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =5a(2) =25a(3) =96a(4) =422a(5) =1780a(6) =7537a(7) =31911a(8) =135283a(9) =573054a(10) =2427879a(11) =10286742a(12) =43582082a(13) =184647156a(14) =782310778a(15) =3314472134a(16) =14042671183a(17) =59495654829a(18) =252069704002
External references
- oeis: A197085