OFFSET
0,18
COMMENTS
Row sums are: {1, 0, 0, 0, 1, 12, 140, 1824, 26730, 437164, 7912720,...}.
EXAMPLE
{1},
{0, 0},
{0, 0, 0},
{0, 0, 0, 0},
{0, 0, 1, 0, 0},
{0, 0, 6, 6, 0, 0},
{0, 0, 28, 84, 28, 0, 0},
{0, 0, 120, 792, 792, 120, 0, 0},
{0, 0, 495, 6435, 12870, 6435, 495, 0, 0},
{0, 0, 2002, 48620, 167960, 167960, 48620, 2002, 0, 0},
{0, 0, 8008, 352716, 1961256, 3268760, 1961256, 352716, 8008, 0, 0}
MATHEMATICA
Table[Table[Binomial[k*(n - k), n], {k, 0, n}], {n, 0, 10}]; Flatten[%]
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Roger L. Bagula, Jan 27 2009
EXTENSIONS
Edited by N. J. A. Sloane, Jan 31 2009
STATUS
approved