OFFSET
0,5
EXAMPLE
Triangle starts:
[0] [0]
[1] [0, 0]
[2] [0, 2, 2]
[3] [0, 13, 9, 18]
[4] [0, 128, 72, 96, 216]
[5] [0, 1562, 800, 900, 1350, 3200]
[6] [0, 23328, 11250, 11520, 14580, 23040, 56250]
[7] [0, 411771, 190512, 183750, 211680, 282240, 459375, 1143072]
MATHEMATICA
A369072[n_, k_] := Floor[Binomial[n, k-1] If[k == 1, 1, (k-1)^(k-1)] n (n-k+1)^(n-k) / 2];
Table[A369072[n, k], {n, 0, 10}, {k, 0, n}] (* Paolo Xausa, Jan 13 2024 *)
PROG
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Peter Luschny, Jan 12 2024
STATUS
approved