An Euler pseudoprime is a composite number which satisfies
See also Euler-Jacobi Pseudoprime, Pseudoprime, Strong Pseudoprime
References
Sloane, N. J. A. Sequence
A006970/M5442
in ``An On-Line Version of the Encyclopedia of Integer Sequences.''
http://www.research.att.com/~njas/sequences/eisonline.html and Sloane, N. J. A. and Plouffe, S.
The Encyclopedia of Integer Sequences. San Diego: Academic Press, 1995.