OFFSET
0,8
LINKS
R. J. Mathar, Table of n, a(n) for n = 0..90
G. Brinkmann and B. D. McKay, Posets on up to 16 Points, Tables 8, 10, 16, 20, 24, 28, 32, 36, 40...
FindStat - Combinatorial Statistic Finder, The number of minimal elements in a poset., The number of maximal elements of a poset.
FORMULA
T(n+1, 1) = Sum_{i=0}^n T(n, i) = A000112(n).
EXAMPLE
1,
0,1,
0,1,1,
0,2,2,1,
0,5,7,3,1,
0,16,27,15,4,1,
0,63,134,88,27,5,1,
0,318,814,642,221,43,6,1,
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Jens Voß, Nov 07 2001
EXTENSIONS
Values beyond row 6 from R. J. Mathar, Mar 14 2021
STATUS
approved