OFFSET
1,1
COMMENTS
EXAMPLE
Let R=2 (1 point each) and C=3 (2, 3 and 4 (call that one black) points). The sequence red-black-red-black-red-black-2-3-black gives 24 points. Thus 24 is an element in this sequence.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jonas Wallgren, May 04 2007
STATUS
approved