

A174063


Triangular array (read by rows) containing the least n integers (using lexicographic order) all less than 2n such that no integer divides another.


2



1, 2, 3, 2, 3, 5, 2, 3, 5, 7, 4, 5, 6, 7, 9, 4, 5, 6, 7, 9, 11, 4, 5, 6, 7, 9, 11, 13, 4, 6, 7, 9, 10, 11, 13, 15, 4, 6, 7, 9, 10, 11, 13, 15, 17, 4, 6, 7, 9, 10, 11, 13, 15, 17, 19, 4, 6, 9, 10, 11, 13, 14, 15, 17, 19, 21, 4, 6, 9, 10, 11, 13, 14, 15, 17, 19, 21, 23, 4, 6, 9, 10, 11, 13, 14
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OFFSET

1,2


COMMENTS

The first number on each row is 2^k, where k is the greatest integer such that (3^k)/2 < n.


LINKS

Table of n, a(n) for n=1..85.


EXAMPLE

1;
2, 3;
2, 3, 5;
2, 3, 5, 7;
4, 5, 6, 7, 9;
4, 5, 6, 7, 9, 11;
4, 5, 6, 7, 9, 11, 13;
4, 6, 7, 9, 10, 11, 13, 15;


CROSSREFS

Cf. A174062, A174094.
Sequence in context: A249049 A138239 A112484 * A327277 A124459 A283360
Adjacent sequences: A174060 A174061 A174062 * A174064 A174065 A174066


KEYWORD

nonn,tabl


AUTHOR

David Brown, Mar 07 2010


EXTENSIONS

Definition corrected by David Brown, Mar 20 2010


STATUS

approved



