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A055552 Number of base-2 strong pseudoprimes (A001262) less than 10^n. 3
0, 0, 0, 5, 16, 46, 162, 488, 1282, 3291, 8607, 22407, 58892, 156251, 419489, 1135860, 3115246, 8646507, 24220195 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
Table of n, a(n) for n=1..19.
William Galway, Tables of pseudoprimes and related data.
Eric Weisstein's World of Mathematics, Pseudoprime
Eric Weisstein's World of Mathematics, Strong Pseudoprime
Index entries for sequences related to pseudoprimes
CROSSREFS
Cf. A001262.
Sequence in context: A071101 A110580 A351283 * A086750 A086749 A194541
Adjacent sequences: A055549 A055550 A055551 * A055553 A055554 A055555
KEYWORD
nonn,hard,more
AUTHOR
Eric W. Weisstein
EXTENSIONS
Corrected by Shyam Sunder Gupta, Mar 04 2002
a(14)-a(15) from Charles R Greathouse IV, Aug 15 2006
a(16)-a(19) from Charles R Greathouse IV, Mar 14 2011
STATUS
approved

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Last modified June 11 03:24 EDT 2024. Contains 373288 sequences. (Running on oeis4.)