OFFSET
1,3
EXAMPLE
1
1
2 3
1
2 3
4 5 6
1
2 3
4 5 6
7 8 9 10
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
CROSSREFS
KEYWORD
nonn
AUTHOR
Colm Mulcahy, Dec 05 2006
EXTENSIONS
More terms from Jonathan R. Love (japanada11(AT)yahoo.ca), Mar 07 2007
STATUS
approved