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A023702
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Numbers with exactly 4 2's in ternary expansion of n.
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2
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80, 161, 188, 215, 224, 233, 236, 239, 240, 241, 323, 404, 431, 458, 467, 476, 479, 482, 483, 484, 512, 539, 548, 557, 560, 563, 564, 565, 593, 620, 629, 638, 641, 644, 645, 646, 656, 665, 668, 671, 672, 673, 683, 692, 695
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