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A136244
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Least positive integer k such that 2k can be expressed as the sum of two primes in exactly n ways.
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0
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OFFSET
| 1,1
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COMMENTS
| It appears that 2,3,4,6 are the only numbers k such that 2k can be expressed as the sum of two primes in only one way.
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EXAMPLE
| a(3) = 11: 22 = 3 +11 = 5 +17 = 11 +11. i.e. 22 is the least number which could be expressed as the sum of two prime numbers in exactly three ways.
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CROSSREFS
| Sequence in context: A156004 A174194 A174237 * A181580 A118754 A140559
Adjacent sequences: A136241 A136242 A136243 * A136245 A136246 A136247
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KEYWORD
| nonn
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AUTHOR
| K.B. Subramaniam (shunya_1950(AT)yahoo.co.in), Dec 24 2007
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