Number of n X 7 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 1 vertically.

Terms

a(0) =42a(1) =1764a(2) =6216a(3) =13860a(4) =25200a(5) =40740a(6) =60984a(7) =86436a(8) =117600a(9) =154980a(10) =199080a(11) =250404a(12) =309456a(13) =376740a(14) =452760a(15) =538020a(16) =633024a(17) =738276a(18) =854280a(19) =981540a(20) =1120560a(21) =1271844a(22) =1435896a(23) =1613220a(24) =1804320a(25) =2009700a(26) =2229864a(27) =2465316a(28) =2716560a(29) =2984100