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A130791
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Triangle read by rows: n-th row is the lexicographically earliest arithmetic progression of n primes beginning with A007918(n).
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5
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2, 2, 3, 3, 5, 7, 5, 11, 17, 23, 5, 11, 17, 23, 29, 7, 37, 67, 97, 127, 157, 7, 157, 307, 457, 607, 757, 907, 11, 1210241, 2420471, 3630701, 4840931, 6051161, 7261391, 8471621, 11, 32671181, 65342351, 98013521, 130684691, 163355861, 196027031, 228698201, 261369371
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| If we omit the first row, is this the same triangle as A113460? Equivalently, do A061558 and A113461 agree apart from the initial term? Answer: almost certainly not!
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LINKS
| Ray Chandler, Table of n, a(n) for n=1..153
Andrew Granville, Prime Number Patterns
Index entries for sequences related to primes in arithmetic progressions
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EXAMPLE
| Triangle begins:
2
2 3
3 5 7
5 11 17 23
5 11 17 23 29
7 37 67 97 127 157
7 157 307 457 607 757 907
11 1210241 2420471 3630701 4840931 6051161 7261391 8471621
11 32671181 65342351 98013521 130684691 163355861 196027031 228698201 261369371
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CROSSREFS
| For common differences see A061558.
Sequence in context: A079955 A192928 A136417 * A133277 A133276 A055501
Adjacent sequences: A130788 A130789 A130790 * A130792 A130793 A130794
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KEYWORD
| nonn,tabl
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Sep 22 2007, Oct 17 2007
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EXTENSIONS
| Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Sep 22 2007
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