OFFSET
1,6
LINKS
C. Lamathe, The Number of Labeled k-Arch Graphs, Journal of Integer Sequences, Vol. 7 (2004), Article 04.3.1.
EXAMPLE
Triangle begins:
1
1 1
1 1 3
1 1 6 16
1 1 10 100 125
MAPLE
T:=(n, k)->binomial(n, k)^(k-1): for n from 1 to 10 do seq(T(n, k), k=0..n-1) od; # yields sequence in triangular form; Emeric Deutsch, Aug 01 2005
PROG
(PARI) tabl(nn) = {for (n=1, nn, for (k=0, n-1, print1(binomial(n, k)^(k-1), ", "); ); print(); ); } \\ Michel Marcus, May 23 2015
CROSSREFS
KEYWORD
AUTHOR
N. J. A. Sloane, Feb 24 2005
EXTENSIONS
More terms from Emeric Deutsch, Aug 01 2005
STATUS
approved