Number of nX4 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.
A197619
Number of nX4 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) =0a(2) =27a(3) =98a(4) =242a(5) =863a(6) =3157a(7) =13712a(8) =55965a(9) =202825a(10) =753766a(11) =2893339a(12) =11525072a(13) =44576853a(14) =168309683a(15) =644170650a(16) =2497548575a(17) =9646371371a(18) =37048714857a(19) =142141767377a(20) =546761780936
External references
- oeis: A197619