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A065342
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Triangle of sum of two primes: p(n)+p(k) with n >= k >= 1.
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5
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4, 5, 6, 7, 8, 10, 9, 10, 12, 14, 13, 14, 16, 18, 22, 15, 16, 18, 20, 24, 26, 19, 20, 22, 24, 28, 30, 34, 21, 22, 24, 26, 30, 32, 36, 38, 25, 26, 28, 30, 34, 36, 40, 42, 46, 31, 32, 34, 36, 40, 42, 46, 48, 52, 58, 33, 34, 36, 38, 42, 44, 48, 50, 54, 60, 62, 39, 40, 42, 44, 48
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Reinhard Zumkeller, First 125 rows of triangle, flattened
Index entries for sequences related to Goldbach conjecture
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FORMULA
| a(n, k) =2*A065305(n, k) [but note different offset]
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EXAMPLE
| Sequence starts 2+2; 3+2, 3+3; 5+2, 5+3, 5+5; etc. i.e. 4; 5,6; 7,8,10; ...
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PROG
| (Haskell)
a065342 n k = a065342_row n !! (k - 1)
a065342_row n = map ((+ a000040 n) . a000040) [1..n]
a065342_tabl = map a065342_row [1..]
-- Reinhard Zumkeller, Jan 30 2012
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CROSSREFS
| Cf. A052147 (left edge), A100484 (right edge), A000040.
Sequence in context: A109602 A084991 A099070 * A076597 A194414 A121541
Adjacent sequences: A065339 A065340 A065341 * A065343 A065344 A065345
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KEYWORD
| nonn,tabl,changed
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AUTHOR
| Henry Bottomley (se16(AT)btinternet.com), Oct 30 2001
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