Number of nX3 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A301349
Number of nX3 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =10a(2) =53a(3) =277a(4) =1433a(5) =7522a(6) =39390a(7) =206370a(8) =1081141a(9) =5664201a(10) =29675091a(11) =155470142a(12) =814520042a(13) =4267334800a(14) =22356902816a(15) =117129577486a(16) =613651093697
External references
- oeis: A301349