OFFSET
1,2
LINKS
R. H. Hardin, Table of n, a(n) for n=1..444
EXAMPLE
Solutions for sum of products of 3 0..2 pairs = 0 (mod 3) are:
(0*0 + 0*0 + 0*0) (0*0 + 0*0 + 0*1) (0*0 + 0*0 + 0*2) (0*0 + 0*1 + 0*1)
(0*0 + 0*1 + 0*2) (0*0 + 0*2 + 0*2) (0*0 + 1*1 + 1*2) (0*0 + 1*2 + 2*2)
(0*1 + 0*1 + 0*1) (0*1 + 0*1 + 0*2) (0*1 + 0*2 + 0*2) (0*1 + 1*1 + 1*2)
(0*1 + 1*2 + 2*2) (0*2 + 0*2 + 0*2) (0*2 + 1*1 + 1*2) (0*2 + 1*2 + 2*2)
(1*1 + 1*1 + 1*1) (1*1 + 1*1 + 2*2) (1*1 + 2*2 + 2*2) (1*2 + 1*2 + 1*2)
(2*2 + 2*2 + 2*2)
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, suggested by Max Alekseyev in the Sequence Fans Mailing List, Sep 20 2010
STATUS
approved