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A037480
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Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,2.
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2
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1, 5, 16, 50, 151, 455, 1366, 4100, 12301, 36905, 110716, 332150, 996451, 2989355, 8968066, 26904200, 80712601, 242137805, 726413416, 2179240250, 6537720751, 19613162255, 58839486766, 176518460300, 529555380901
(list; graph; refs; listen; history; internal format)
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