OFFSET
1,6
COMMENTS
Row sums = A156834: (1, 2, 3, 5, 5, 12, 7, 17, 19, 30, 11,...).
FORMULA
EXAMPLE
First few rows of the triangle =
1;
1, 1;
1, 0, 2;
1, 2, 0, 2;
1, 0, 0, 0, 4;
1, 3, 6, 0, 0, 2;
1, 0, 0, 0, 0, 0, 6;
1, 4, 0, 8, 0, 0, 0, 4;
1, 0, 12, 0, 0, 0, 0, 0, 6;
1, 5, 0, 0, 20, 0, 0, 0, 0, 4;
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10;
1, 6, 20, 20, 0, 12, 0, 0, 0, 0, 0, 4;
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12;
1, 7, 0, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 6;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson & Mats Granvik, Feb 16 2009
STATUS
approved