OFFSET
0,4
COMMENTS
Row sums = A000990: (1, 1, 3, 5, 10, 16, 29, 45, ...).
EXAMPLE
First few rows of the triangle:
1;
0, 1;
2, 0, 1;
2, 2, 0, 1;
5, 2, 2, 0, 1;
6, 5, 2, 2, 0, 1;
13, 6, 5, 2, 2, 0, 1;
16, 13, 6, 5, 2, 2, 0, 1;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Nov 11 2008
EXTENSIONS
Typo in formula corrected by Olivier Gérard, Jul 25 2016
STATUS
approved