Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,3,1,1,1 for x=0,1,2,3,4.
A197618
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,3,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =0a(1) =8a(2) =0a(3) =27a(4) =27a(5) =154a(6) =272a(7) =1117a(8) =2321a(9) =7299a(10) =18275a(11) =54627a(12) =150925a(13) =405606a(14) =1155080a(15) =3116256a(16) =8868340a(17) =23994371a(18) =67730571a(19) =185335502a(20) =518769588a(21) =1425654497a(22) =3971507983a(23) =10973327639a(24) =30469831297a(25) =84329766549a(26) =233791763797
External references
- oeis: A197618