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R. J. Mathar, Table of n, a(n) for n = 1..369
Eric Weisstein's World of Mathematics, Strong Pseudoprime
Index entries for sequences related to pseudoprimes
Cf. A020229 (base 3), A020307 (base 81).
Sequence in context: A092125 A005935 A020307 * A046427 A179338 A020238
Adjacent sequences: A020232 A020233 A020234 * A020236 A020237 A020238
David W. Wilson