A057978 - OEIS

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A057978

Number of untouchable numbers <= 10^n.

2, 5, 89, 1212, 13863, 150232, 1574973 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	LINKS	`Index entries for sequences related to numbers of primes in various ranges`
	CROSSREFS	`Cf. A005114.` `Sequence in context: A048187 A082431 A023272 * A093308 A162569 A120800` `Adjacent sequences: A057975 A057976 A057977 * A057979 A057980 A057981`
	KEYWORD	`more,nonn`
	AUTHOR	`Naohiro Nomoto (6284968128(AT)geocities.co.jp), Nov 13 2000`
	EXTENSIONS	`a(5)-a(6) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Jul 19 2008` `a(7) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Aug 13 2011`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.