[seqfan] I wonder

Veikko Pohjola veikko at nordem.fi
Sat Jul 17 09:18:08 CEST 2010


Might these be of some more general interest?
1. The sequence a(i) of the integer terms of a(n) = n^2/PrimePi(n), n=2,3,4,....
a(i) = 4, 8, 12, 16, 25, 50, 64, 81, 90, 99, 196, 242, 384, 400, ...
2. The sequence n(i) of the integer terms of a(n)
n(i) = 2, 4, 6, 8, 10, 20, 24, 27, 30, 33, 56, 66, 96, 100, ...

For me, so far, they just look nicely progressing sequences.
Veikko


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