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A130791
Triangle read by rows: n-th row is the lexicographically earliest arithmetic progression of n primes beginning with A007918(n).
5
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
OFFSET
1,1
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!
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
CROSSREFS
For common differences see A061558.
Sequence in context: A136417 A363672 A322787 * A133277 A133276 A354485
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Sep 22 2007, Oct 17 2007
EXTENSIONS
Extended by Ray Chandler, Sep 22 2007
STATUS
approved