OFFSET
0,3
EXAMPLE
Triangle begins:
1;
1, 2;
1, 3, 5;
1, 4, 10, 16;
1, 5, 17, 41, 65;
1, 6, 26, 86, 206, 326;
1, 7, 37, 157, 517, 1237, 1957;
1, 8, 50, 260, 1100, 3620, 8660, 13700;
...
MATHEMATICA
T[n_, k_] := Sum[Binomial[n, j] j!, {j, 0, k}]; Table[T[n, k], {n, 0, 9}, {k, 0, n}] // Flatten
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Ilya Gutkovskiy, Sep 10 2021
STATUS
approved