Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303178
Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =37a(2) =72a(3) =297a(4) =1302a(5) =5050a(6) =20188a(7) =81926a(8) =329957a(9) =1329466a(10) =5358347a(11) =21608578a(12) =87101482a(13) =351134917a(14) =1415564660a(15) =5706662796a(16) =23005513674a(17) =92743499633a(18) =373882345405
External references
- oeis: A303178