OFFSET
1,4
COMMENTS
The 7th antidiagonal is too large to be included in Data.
LINKS
D. Condon, Yuxin Wang, and E. Yang, De Bruijn Polyominoes, arXiv:2405.18543 [math.CO], 2024. See page 5.
T. van Aardenne-Ehrenfest and N. G. de Brujin, Circuits and Trees in Oriented Linear Graphs. In: Simon Stevin 28 (1951), pp. 203-217.
EXAMPLE
The array begins:
1, 1, 1, 1, ...
1, 1, 2, 16, ...
2, 24, 373248, 12635683568857645056, ...
...
MATHEMATICA
A[n_, k_]:=(n!)^(n^(k-1))/n^k; Table[A[n-k+1, k], {n, 6}, {k, n}]//Flatten
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Stefano Spezia, Jun 01 2024
STATUS
approved