A055552 - OEIS

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A055552

Number of base-2 strong pseudoprimes (A001262) less than 10^n.

0, 0, 0, 5, 16, 46, 162, 488, 1282, 3291, 8607, 22407, 58892, 156251, 419489, 1135860, 3115246, 8646507, 24220195 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	LINKS	`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 numbers of primes in various ranges`
	CROSSREFS	`Cf. A001262.` `Sequence in context: A004146 A071101 A110580 * A086750 A086749 A194541` `Adjacent sequences: A055549 A055550 A055551 * A055553 A055554 A055555`
	KEYWORD	`nonn,hard`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com)`
	EXTENSIONS	`Corrected by Shyam Sunder Gupta (guptass(AT)rediffmail.com), 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`

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Last modified February 13 02:33 EST 2012. Contains 205435 sequences.