

A113460


Triangle read by rows: nth row is the lexicographically earliest arithmetic progression of n numbers all having the same prime signature.


5



1, 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
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,2


COMMENTS

Presumably this triangle will differ from that in A130791 after some point.  N. J. A. Sloane, Sep 22 2007
Apart from the initial term, this sequence coincides with A130791 for at least the first 210 rows.  David W. Wilson, Sep 22 2007


LINKS

Table of n, a(n) for n=1..43.
Index entries for sequences related to primes in arithmetic progressions


EXAMPLE

Triangle begins:
1
2,3
3,5,7
5,11,17,23
5,11,17,23,29
7,37,67,97,127,157


CROSSREFS

Cf. A113459 (leading terms).
Cf. A007918, A086786, A113459, A113461, A130791, A127781.
Sequence in context: A180611 A084127 A089934 * A113470 A086786 A211890
Adjacent sequences: A113457 A113458 A113459 * A113461 A113462 A113463


KEYWORD

nonn,tabl


AUTHOR

David Wasserman, Jan 08 2006


EXTENSIONS

Erroneous commas in sequence deleted by N. J. A. Sloane, Sep 22 2007


STATUS

approved



