OFFSET
0,5
EXAMPLE
First few rows of the triangle:
1;
1, 1;
1, 4, 1;
1, 5, 5, 1;
1, 8, 12, 8, 1;
1, 9, 20, 20, 9, 1;
1, 12, 29, 40, 29, 12, 1;
1, 13, 41, 69, 69, 41, 13, 1;
1, 16, 56, 112, 140, 112, 56, 16, 1;
1, 17, 72, 168, 252, 252, 168, 72, 17, 1;
1, 20, 89, 240, 420, 504, 420, 240, 89, 20, 1;
1, 21, 109, 329, 660, 924, 924, 660, 329, 109, 21, 1;
1, 24, 132, 440, 989, 1584, 1848, 1584, 989, 440, 132, 24, 1;
...
MATHEMATICA
f[n_] := 2*n - Mod[n, 2]; T[n_, k_] := f[Binomial[n, k]]; Table[T[n, k], {n, 0, 11}, {k, 0, n}] // Flatten (* Amiram Eldar, Aug 01 2023 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Oct 14 2009
EXTENSIONS
a(26) = 12 inserted and more terms from Georg Fischer, Jun 07 2023
STATUS
approved