**a(1)=1, then a(n)=3*a(n-1) if n is already in the sequence, a(n)=2*a(n-1) otherwise.**

*1, 2, 4, 12, 24, 48, 96, 192, 384, 768, 1536, 4608, 9216, 18432, 36864, 73728*

*3 seqfan posts*

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

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