OFFSET
1,2
COMMENTS
EXAMPLE
First few rows of the triangle:
1;
2, 1;
3, 2, 1;
4, 4, 2, 1;
5, 6, 4, 2, 1;
6, 9, 7, 4, 2, 1;
7, 12, 11, 7, 4, 2, 1;
8, 16, 16, 12, 7, 4, 2, 1;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Feb 05 2008
EXTENSIONS
a(38) = 20 corrected by Georg Fischer, May 29 2023
STATUS
approved