Number of n X 3 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302815
Number of n X 3 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =4a(1) =20a(2) =75a(3) =389a(4) =1852a(5) =8485a(6) =41247a(7) =196946a(8) =931243a(9) =4464289a(10) =21314416a(11) =101500589a(12) =484945365a(13) =2314846870a(14) =11042132315a(15) =52714123333a(16) =251602109008
External references
- oeis: A302815