Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.

A207023

Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.

Terms

    a(0) =25a(1) =625a(2) =3025a(3) =9450a(4) =23400a(5) =49925a(6) =95900a(7) =170300a(8) =284475a(9) =452425a(10) =691075a(11) =1020550a(12) =1464450a(13) =2050125a(14) =2808950a(15) =3776600a(16) =4993325a(17) =6504225a(18) =8359525a(19) =10614850a(20) =13331500a(21) =16576725a(22) =20424000a(23) =24953300a(24) =30251375a(25) =36412025a(26) =43536375a(27) =51733150

External references