Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300684
Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =10a(2) =53a(3) =272a(4) =1391a(5) =7187a(6) =37100a(7) =191529a(8) =988754a(9) =5104580a(10) =26353052a(11) =136051331a(12) =702383958a(13) =3626156187a(14) =18720542075a(15) =96647438007a(16) =498956024752
External references
- oeis: A300684