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A190629
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Half the number of n X n symmetric binary matrices with no element equal to a strict majority of its vertical, antidiagonal and horizontal neighbors
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1
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1, 1, 3, 15, 115, 1587, 33283, 1147868, 64664807, 5886944926, 868821662115, 207892029761070, 80727613405529244, 50826500691456029359, 51893686154530928512158, 85927150265759233982684320
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