OFFSET
1,2
EXAMPLE
The table has shape A000041 and begins:
1
1 1
2 1 1
6 2 1 1 1
22 6 2 2 1 1 1
so
a(n) begins 1,2,4,11,35,...
CROSSREFS
KEYWORD
nonn
AUTHOR
Alford Arnold, Jul 12 2010
STATUS
approved