OFFSET
0,5
COMMENTS
Row sums = A074878: (1, 2, 6, 14, 32, 70, 150,...).
EXAMPLE
First few rows of the triangle are:
1;
1, 1;
1, 4, 1;
1, 6, 6, 1;
1, 9, 12, 9, 1;
1, 11, 23, 23, 11, 1;
1, 14, 34, 52, 34, 14, 1;
1, 16, 51, 90, 90, 51, 16, 1;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jul 05 2007
STATUS
approved