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A277766
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Number of nX7 0..2 arrays with every element equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0) both plus 1 mod 3 and minus 1 mod 3, with new values introduced in order 0..2.
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1
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0, 1584, 220549, 221983169, 110036582827, 67079817376928, 38224184451654485, 22257182633194608078, 12869705874813306766481, 7458446559929491293690613, 4319259920844964071189461906, 2501924582698962860252708115060
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