[seqfan] Re: structure & sequences defined by "exotic multiplication"

Georgi Guninski guninski at guninski.com
Thu Dec 24 13:09:01 CET 2009

On Wed, Dec 23, 2009 at 10:08:02PM -0400, Maximilian Hasler wrote:
> less trivial : n ^^ 2 = n @ n : (not yet in OEIS).

taking the polynomial derivative seem to give:
A090884 There exists an isomorphism from the positive rationals under
multiplication to Z[x] under addition

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