I wonder what happens for powers of e. This should be different than pi, since e has continued fraction coefficients that make a nice pattern [2, 1, 2, 1, 1, 4, 1, 1, ...]. e^2 does as well (https://oeis.org/A001204). (I know this fact but have never understood any of the proofs.)
When EM waves that are in phase combine, the resultant amplitude of the combined waveform is the sum of the amplitudes; constructive interference is addition. And from addition, subtraction & multiplication and exponents and logarithms.
And then this concept of phase and curl ( convergence and divergence ) in non-orthogonal, probably not conditionally-independent fluid fields that combine complexly and nonlinearly. Define distance between (fluid) field moments. A coherent multibody problem hopefully with unitarity and probably nonlocality.
Can emergence of complex adaptive behavior in complex nonlinear systems of fields emerge from such observable phenomena as countability (perhaps just of application-domain-convenient field-combinatorial multiples in space Z)?
But e^3 (https://oeis.org/A058282) does not have a "nice pattern", and neither does e^4 (https://oeis.org/A058283)