**Generalized Euler phi function (for p=2).**

*1, 2, 3, 8, 15, 24, 49, 128, 189, 480, 1023, 1536, 4095, 6272, 10125, 32768, 65025*

*2 seqfan posts*

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

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