A105457 - OEIS

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A105457

Number of irregular primes less than e^n.

0, 0, 0, 1, 6, 21, 66, 170, 404, 984, 2384, 5877, 14459, 36720, 92657, 234374 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,5`
	MATHEMATICA	`ip={ the list of irregular primes to 12 million }; Table[ Length[ Select[ip, # < E^n &]], {n, 16}]`
	CROSSREFS	`Cf. A040014, A105461, A105466.` `Sequence in context: A132130 A022571 A117962 * A134931 A119103 A180795` `Adjacent sequences: A105454 A105455 A105456 * A105458 A105459 A105460`
	KEYWORD	`hard,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Apr 07 2005`

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.