Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.

A207691

Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically.

Terms

    a(0) =25a(1) =625a(2) =576a(3) =2304a(4) =6084a(5) =15376a(6) =40000a(7) =108900a(8) =304704a(9) =770884a(10) =2102500a(11) =5692996a(12) =14915044a(13) =40653376a(14) =107453956a(15) =288252484a(16) =776179600a(17) =2054990224a(18) =5544589444a(19) =14786560000a(20) =39491228176a(21) =106128699076a(22) =282653849104a(23) =758254325284

External references