Number of nX2 0..1 arrays with no 1 equal to more than two of its king-move neighbors.

A282522

Number of nX2 0..1 arrays with no 1 equal to more than two of its king-move neighbors.

Terms

    a(0) =4a(1) =15a(2) =43a(3) =144a(4) =473a(5) =1529a(6) =5004a(7) =16335a(8) =53283a(9) =173960a(10) =567801a(11) =1853249a(12) =6049204a(13) =19744783a(14) =64447643a(15) =210360128a(16) =686623961a(17) =2241169033a(18) =7315270172a(19) =23877346447a(20) =77936655891a(21) =254388502200a(22) =830334694009

External references