OFFSET
1,3
COMMENTS
Row sums see A001318.
EXAMPLE
The triangle begins:
k=1 2 3 4 5 6
n=1: 1;
n=2: 0, 2;
n=3: 2, 0, 3;
n=4: 0, 3, 0, 4;
n=5: 3, 0, 4, 0, 5;
n=6: 0, 4, 0, 5, 0, 6;
and so on.
MATHEMATICA
T[n_, k_] := If[EvenQ[n + k], (n + k)/2, 0]; Table[T[n, k], {n, 1, 13}, {k, 1, n}] // Flatten (* Amiram Eldar, Jul 19 2022 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Ctibor O. Zizka, Jul 19 2022
STATUS
approved