OFFSET
1,3
COMMENTS
Column 2 of A180782
LINKS
R. H. Hardin, Table of n, a(n) for n=1..999
EXAMPLE
Solutions for sum of products of 2 1..5 pairs = 0 (mod 6) are
(1*1 + 1*5) (1*2 + 1*4) (1*2 + 2*2) (1*2 + 2*5) (1*2 + 4*4) (1*3 + 1*3)
(1*3 + 3*3) (1*3 + 3*5) (1*4 + 2*4) (1*4 + 4*5) (1*5 + 5*5) (2*2 + 2*4)
(2*2 + 4*5) (2*3 + 2*3) (2*3 + 3*4) (2*4 + 2*5) (2*4 + 4*4) (2*5 + 4*5)
(3*3 + 3*3) (3*3 + 3*5) (3*4 + 3*4) (3*5 + 3*5) (4*4 + 4*5)
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 20 2010
STATUS
approved