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A222203
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Number of ways to cover the n X n+1 grid graph by vertex disjoint cycles.
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4
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1, 3, 54, 1140, 99051, 13049563, 6044482889, 4738211572702, 11986520595161863, 54755153078468134960, 764291947227525464744293, 20119942924108379011391597989, 1558052539448513320447263528275071, 234788223520702255614480389250160811898, 101199388044301804167035198499446336399419451, 86918369741985767628242106496018767545685968221295
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