Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,1,0,0 for x=0,1,2,3,4.
A197445
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,1,0,0 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =12a(2) =81a(3) =474a(4) =2678a(5) =15410a(6) =88767a(7) =510482a(8) =2936714a(9) =16895217a(10) =97197637a(11) =559175541a(12) =3216923150a(13) =18506887013a(14) =106469709385a(15) =612517802024
External references
- oeis: A197445