Number of nX9 binary arrays with each 1 adjacent to exactly one 1 vertically and one 1 horizontally.
A183341
Number of nX9 binary arrays with each 1 adjacent to exactly one 1 vertically and one 1 horizontally.
Terms
- a(0) =1a(1) =28a(2) =109a(3) =380a(4) =2450a(5) =12075a(6) =55471a(7) =286079a(8) =1429824a(9) =6989477a(10) =34856362a(11) =173451524a(12) =858586095a(13) =4263159553a(14) =21172762001a(15) =105041615196a(16) =521348098233
External references
- oeis: A183341