OFFSET
1,5
COMMENTS
Column 3 of A180834
LINKS
R. H. Hardin, Table of n, a(n) for n=1..444
EXAMPLE
Solutions for sum of products of 3 2..5 pairs = 1 (mod 7) are
(2*2 + 2*3 + 3*4) (2*2 + 2*4 + 2*5) (2*2 + 2*5 + 3*5) (2*2 + 3*3 + 3*3)
(2*2 + 3*3 + 4*4) (2*2 + 3*4 + 4*5) (2*2 + 4*4 + 4*4) (2*3 + 2*3 + 2*5)
(2*3 + 2*4 + 2*4) (2*3 + 2*4 + 3*5) (2*3 + 2*5 + 4*5) (2*3 + 3*4 + 5*5)
(2*3 + 3*5 + 3*5) (2*4 + 2*4 + 4*5) (2*4 + 2*5 + 5*5) (2*4 + 3*3 + 3*4)
(2*4 + 3*4 + 4*4) (2*4 + 3*5 + 4*5) (2*5 + 2*5 + 3*3) (2*5 + 2*5 + 4*4)
(2*5 + 3*5 + 5*5) (2*5 + 4*5 + 4*5) (3*3 + 3*3 + 5*5) (3*3 + 3*4 + 3*5)
(3*3 + 4*4 + 5*5) (3*4 + 3*4 + 3*4) (3*4 + 3*5 + 4*4) (3*4 + 4*5 + 5*5)
(3*5 + 3*5 + 4*5) (4*4 + 4*4 + 5*5)
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 20 2010
STATUS
approved