OFFSET
1,5
COMMENTS
Suggested by Gary W. Adamson from a previous submission. Very close to (but slightly smaller at 7th row) A086617.
FORMULA
t(n,m) = 2*binomial[m, n] - (1 + n*(m - n)).
EXAMPLE
{1},
{1, 1},
{1, 2, 1},
{1, 3, 3, 1},
{1, 4, 7, 4, 1},
{1, 5, 13, 13, 5, 1},
{1, 6, 21, 30, 21, 6, 1},
{1, 7, 31, 57, 57, 31, 7, 1}
MATHEMATICA
Table[Table[2*Binomial[m, n] - (1 + n*(m - n)), {n, 0, m}], {m, 0, 10}] Flatten[%]
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Roger L. Bagula and Gary W. Adamson, Jun 27 2007
STATUS
approved