OFFSET
0,4
COMMENTS
Cast pairs 0,0 1,0 0,1 2,0 1,1, ... as 0,1,2,3,4,... Sequence shadows pair addition table.
LINKS
Sean A. Irvine, Java program (github)
EXAMPLE
a(1,1)=3 because 1 shadows (1,0) and 3 shadows (2,0) and (1,0)+(1,0)=(2,0).
CROSSREFS
KEYWORD
AUTHOR
Marc LeBrun, Feb 07 2000
STATUS
approved