Number of nX5 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302209
Number of nX5 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =34a(2) =32a(3) =111a(4) =448a(5) =1725a(6) =6423a(7) =24927a(8) =96909a(9) =373007a(10) =1440865a(11) =5580691a(12) =21589993a(13) =83526057a(14) =323320869a(15) =1251515211a(16) =4844117367a(17) =18751251811a(18) =72587463435a(19) =280991282231
External references
- oeis: A302209