Number of nX6 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302633
Number of nX6 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =13a(1) =65a(2) =47a(3) =149a(4) =691a(5) =2262a(6) =8981a(7) =35772a(8) =135125a(9) =522265a(10) =2030558a(11) =7817366a(12) =30184397a(13) =116738915a(14) =450741840a(15) =1740832183a(16) =6725944705a(17) =25979920451a(18) =100351084472a(19) =387650634193
External references
- oeis: A302633