T(n,k)=Number of nXk binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.
A269089
T(n,k)=Number of nXk binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.
Terms
- a(0) =2a(1) =4a(2) =4a(3) =7a(4) =11a(5) =7a(6) =13a(7) =30a(8) =30a(9) =13a(10) =23a(11) =76a(12) =114a(13) =76a(14) =23a(15) =41a(16) =191a(17) =428a(18) =428a(19) =191a(20) =41a(21) =72a(22) =467a(23) =1531a(24) =2238a(25) =1531a(26) =467a(27) =72a(28) =126a(29) =1127
External references
- oeis: A269089