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

A207692

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

Terms

    a(0) =40a(1) =1600a(2) =1296a(3) =5856a(4) =18564a(5) =50096a(6) =145200a(7) =453420a(8) =1403184a(9) =4038800a(10) =12177100a(11) =36992544a(12) =110036104a(13) =332138592a(14) =989787144a(15) =2977771420a(16) =8964400760a(17) =26737629576a(18) =80548970652a(19) =241336844800a(20) =723444785800

External references