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A207019
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Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically
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1
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2, 16, 90, 558, 3315, 16038, 95900, 492932, 2542374, 14009768, 70576726, 371721351, 1947251540, 9924535935, 51877222492, 266862076008, 1370454630930, 7087023247175, 36312119188998, 186625648529320, 958786992765737
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