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A077969
Numbers which can be expressed as the sum of two distinct primes in exactly three ways.
7
24, 30, 34, 40, 44, 46, 52, 56, 58, 98, 122, 128
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..12.
EXAMPLE
30 is a term as 30 = 23+7 = 19+11 = 17+13 are the only three ways to express 30 as a sum of three distinct primes.
CROSSREFS
Cf.
A077914
(2 ways),
A078299
(4 ways),
A080854
(5 ways),
A080862
(6 ways).
Sequence in context:
A354809
A337933
A114635
*
A122181
A167758
A248693
Adjacent sequences:
A077966
A077967
A077968
*
A077970
A077971
A077972
KEYWORD
nonn
AUTHOR
Shyam Sunder Gupta
, Mar 29 2003
STATUS
approved