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A088076
Smallest prime sandwiched between two numbers having exactly n prime divisors.
1
3, 11, 131, 1429, 77141, 3847271, 117048931, 22917541219, 1771365487891, 140734085123059, 14159733947566481
OFFSET
1,1
COMMENTS
Different from A088075 though initial three terms match. Sequence is infinite.
REFERENCES
J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 131, p. 45, Ellipses, Paris 2008.
EXAMPLE
a(3) = 131, 130 = 2*5*13 and 132 = 2^2*3*11 both have three prime divisors. 131 is the smallest such prime.
CROSSREFS
Cf. A088075.
Sequence in context: A219620 A201611 A088075 * A375792 A276258 A284604
KEYWORD
more,nonn
AUTHOR
Amarnath Murthy, Sep 22 2003
EXTENSIONS
More terms from Ray Chandler, Oct 08 2003
a(8) and a(9) from Donovan Johnson, Jun 19 2008
a(10)-a(11) from Donovan Johnson, Feb 18 2009
STATUS
approved