OFFSET
1,7
COMMENTS
Records occur at n=1, 3, 7, 11, 13, 17, 19, 23, 25, 27, 29, 31, 35, 43, 45, 49, 53, 55, 63, 73, 75, 77, 91, 99, 105, 117, 133, 143, 175, 187, ...
LINKS
Peter Kagey, Table of n, a(n) for n = 1..300
Code Golf Stack Exchange, Triangles with rational side lengths
Peter Kagey, Haskell program.
EXAMPLE
For n = 20, the a(20) = 8 triangles have sides:
1/4, 7/20, 2/5;
1/12, 9/20, 7/15;
3/10, 7/20, 7/20;
3/20, 2/5, 9/20;
1/4, 3/10, 9/20;
2/15, 5/12, 9/20;
1/5, 7/20, 9/20; and
1/10, 9/20, 9/20.
CROSSREFS
KEYWORD
nonn
AUTHOR
Peter Kagey, Oct 16 2020
STATUS
approved