id:A105222 - OEIS Search Results

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Minimal base a>1 to which n is Fermat pseudoprime, i.e. a^(n-1)=1 (mod n).

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3, 2, 5, 2, 7, 2, 9, 8, 11, 2, 13, 2, 15, 4, 17, 2, 19, 2, 21, 8, 23, 2, 25, 7, 27, 26, 9, 2, 31, 2, 33, 10, 35, 6, 37, 2, 39, 14, 41, 2, 43, 2, 45, 8, 47, 2, 49, 18, 51, 16, 9, 2, 55, 21, 57, 20, 59, 2, 61, 2, 63, 8, 65, 8, 25, 2, 69, 22, 11, 2, 73, 2, 75, 26, 45, 34, 79, 2, 81, 80, 83, 2 (list; graph; listen)

	OFFSET	`2,1`
	LINKS	`Eric Weisstein's World of Mathematics, Fermat Pseudoprime`
	FORMULA	`a(2k)=2k+1, a(p)=2 for prime p.`
	CROSSREFS	`Adjacent sequences: A105219 A105220 A105221 this_sequence A105223 A105224 A105225` `Sequence in context: A023513 A069735 A046524 this_sequence A086571 A133945 A124219`
	KEYWORD	`easy,nonn`
	AUTHOR	`Max Alekseyev (maxal(AT)cs.ucsd.edu), Apr 14 2005`

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.

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