OFFSET
0,5
COMMENTS
Row sums are: {1, 2, 4, 14, 74, 242, 1442, 10082, 80642, 725762, 7257602,...}.
Second column is n!.
EXAMPLE
{1},
{1, 1},
{1, 2, 1},
{1, 6, 6, 1},
{1, 24, 24, 24, 1},
{1, 120, 0, 0, 120, 1},
{1, 720, 0, 0, 0, 720, 1},
{1, 5040, 0, 0, 0, 0, 5040, 1},
{1, 40320, 0, 0, 0, 0, 0, 40320, 1},
{1, 362880, 0, 0, 0, 0, 0, 0, 362880, 1},
{1, 3628800, 0, 0, 0, 0, 0, 0, 0, 3628800, 1}
MATHEMATICA
Table[Table[n!/(n - k*(n - k))!, {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