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A034216
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Number of ternary codes of length 4 with n words.
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0
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1, 1, 4, 20, 144, 1245, 12473, 120213, 1067757, 8508432, 60801152, 391078610, 2277606189, 12079172109, 58646808981, 261900799332, 1080219903328, 4129996450120, 14683917874810, 48687786994190, 150930310833366
(list; graph; refs; listen; history; internal format)
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