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Search: id:A107318
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| A107318 |
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Number of ordered Goldbach partitions of 10^n. |
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+0
4
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| 3, 12, 56, 254, 1620, 10804, 77614, 582800, 4548410, 36400976, 298182320, 2487444740, 21066301710
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Number of ways of writing 10^n as the sum of two odd primes, when the order matters.
Apart from a(1), equals 2*A065577(n).
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CROSSREFS
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See A065577 for further information.
Sequence in context: A001764 A120920 A064314 this_sequence A050147 A120921 A074533
Adjacent sequences: A107315 A107316 A107317 this_sequence A107319 A107320 A107321
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), based on email from R. J. Mathar, Nov 07 2006
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EXTENSIONS
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a(13) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 16 2009
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