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R. J. Mathar, Table of n, a(n) for n = 1..229
Eric Weisstein's World of Mathematics, Strong Pseudoprime
Index entries for sequences related to pseudoprimes
Cf. A001262 (base 2), A020229 (base 3).
Sequence in context: A050217 A214305 A086837 * A087716 A084653 A143688
Adjacent sequences: A020227 A020228 A020229 * A020231 A020232 A020233
David W. Wilson