**1+A053830(n-1), where A053830 is the sum of the digits of its argument in base 9.**

*1, 2, 3, 4, 5, 6, 7, 8, 9, 2, 3, 4, 5, 6, 7, 8, 9, 10, 3, 4, 5, 6, 7, 8, 9, 10, 11, 4, 5, 6, 7, 8, 9*

*3 seqfan posts*

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

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