**Numbers with no consecutive equal base 4 digits.**

*1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 17, 18, 19, 24, 25, 27, 28, 29, 30, 33, 34, 35, 36*

*2 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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