OFFSET
1,2
COMMENTS
EXAMPLE
First few rows of the triangle:
1;
2, 1;
2, 0, 2;
3, 2, 0, 2;
2, 0, 0, 0, 4;
4, 2, 4, 0, 0, 2;
2, 0, 0, 0, 0, 0, 6;
4, 3, 0, 4, 0, 0, 0, 4;
3, 0, 4, 0, 0, 0, 0, 0, 6;
4, 2, 0, 0, 8, 0, 0, 0, 0, 4;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jan 15 2007
EXTENSIONS
Edited by N. J. A. Sloane, Aug 11 2019
a(49) = 0 inserted and more terms from Georg Fischer, May 29 2023
STATUS
approved