OFFSET
1,1
EXAMPLE
2; 1,5; 3,4,8; 6,7,9,13; 10,11,12,14,19; 15,16,17,18,20,31; ...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Amarnath Murthy, Oct 05 2002
EXTENSIONS
Corrected and extended by Sascha Kurz, Jan 20 2003
STATUS
approved