OFFSET
1,6
COMMENTS
Rightmost terms of each row form A001147: (1, 1, 3, 15, 105, 945,...).
EXAMPLE
First few rows of the triangle are:
1;
1, 1, 1;
1, 2, 3, 3, 3;
1, 3, 6, 10, 15, 15, 15;
1, 4, 10, 22, 43, 70, 105, 105, 105;
1, 5, 15, 40, 95, 201, 390, 630, 945, 945, 945;
1, 6, 21, 65, 180, 456, 1066, 2226, 4305, 6930, 10395, 10395, 10395;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson & Roger L. Bagula, May 25 2008
STATUS
approved