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A195228
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Number of lower triangles of an n X n 0..4 array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by one or less
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1
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5, 29, 337, 7705, 348849, 31374671, 5618308863, 2006626824777, 1431393426377379, 2041526404394580503, 5826929219460553056125, 33306813274969071019847237, 381509343842237775318179191165, 8761682347863104757428803661222769
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