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A138117
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Triangle read by rows: row n lists the first 2n-1 prime numbers.
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0
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2, 2, 3, 5, 2, 3, 5, 7, 11, 2, 3, 5, 7, 11, 13, 17, 2, 3, 5, 7, 11, 13, 17, 19, 23, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| Triangle begins:
....... 2
..... 2,3,5
... 2,3,5,7,11
. 2,3,5,7,11,13,17
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MATHEMATICA
| nn=10; Flatten[Table[Take[Prime[Range[2nn+1]], 2n+1], {n, 0, nn}]] (* From Harvey P. Dale, Aug 16 2011 *)
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CROSSREFS
| Cf. A000040, A037126, A138139, A138143.
Sequence in context: A058256 A140183 A130725 * A175908 A152430 A117918
Adjacent sequences: A138114 A138115 A138116 * A138118 A138119 A138120
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KEYWORD
| easy,nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Mar 14 2008, corrected Mar 15 2008
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