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A060250

The smallest k such that k! + 1 has exactly n prime factors (with multiplicity).

1, 4, 9, 23, 16, 18, 40, 89 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..8.`
	MATHEMATICA	`With[{f=PrimeOmega[Range[90]!+1]}, Table[Position[f, _?(#==n&), 1, 1], {n, 8}]]//Flatten (* Harvey P. Dale, Feb 11 2018 *)`
	PROG	`(PARI) a(n)=my(k); while(bigomega(k++!+1)-n, ); k \\ Charles R Greathouse IV, Apr 25 2012`
	CROSSREFS	`Cf. A054990.` `Sequence in context: A370021 A374055 A070713 * A138991 A361002 A138990` `Adjacent sequences: A060247 A060248 A060249 * A060251 A060252 A060253`
	KEYWORD	`nonn,more`
	AUTHOR	`Robert G. Wilson v, Mar 23 2001`
	EXTENSIONS	`a(8) from Arkadiusz Wesolowski, Apr 25 2012` `Title clarified by Sean A. Irvine, Nov 02 2022`
	STATUS	`approved`

Last modified August 6 02:23 EDT 2024. Contains 374957 sequences. (Running on oeis4.)