Number of nX3 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300925
Number of nX3 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =11a(2) =75a(3) =508a(4) =3447a(5) =23404a(6) =158855a(7) =1078231a(8) =7318522a(9) =49674630a(10) =337167639a(11) =2288532749a(12) =15533466237a(13) =105433742828a(14) =715633842274
External references
- oeis: A300925