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Search: id:A092576
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A092576 a(n) = the least number which is the average of two consecutive primes and has exactly n prime factors. +0
1
4, 12, 56, 72, 64, 192, 960, 1152, 3840, 7168, 4096, 30720, 36864, 110592, 360448, 663552, 2064384, 786432, 3932160, 5242880, 9437184, 63700992, 138412032, 169869312, 436207616, 3875536896, 1358954496, 1879048192, 10066329600 (list; graph; listen)
OFFSET

2,1

COMMENT

The sequence is non-monotonic: a(6)<a(5), a(12)<a(11), a(19)<a(18).

EXAMPLE

a(3)=12 because 12=(11+13)/2, and 12=2*2*3 has 3 prime factors.

CROSSREFS

Cf. A024675, A078443.

Sequence in context: A053454 A125528 A124005 this_sequence A051195 A124004 A019266

Adjacent sequences: A092573 A092574 A092575 this_sequence A092577 A092578 A092579

KEYWORD

nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Feb 29 2004

EXTENSIONS

Edited by Don Reble (djr(AT)nk.ca), Mar 17 2007

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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