Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4.
A197246
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,0,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =16a(2) =53a(3) =275a(4) =780a(5) =5713a(6) =16773a(7) =98870a(8) =393913a(9) =1869033a(10) =8527840a(11) =32730687a(12) =177791439a(13) =674100600a(14) =3386483171a(15) =13856198755a(16) =66236228308a(17) =289604893615
External references
- oeis: A197246