OFFSET
0,3
COMMENTS
An independent set is a set of vertices in a graph, no two of which are adjacent.
LINKS
R. P. Stanley, Exponential structures
MATHEMATICA
nn = 14; B[n_] := n! 2^Binomial[n, 2]; ggf[egf_] := Normal[Series[egf, {x, 0, nn}]] /.Table[x^i -> x^i/2^Binomial[i, 2], {i, 0, nn}]; Table[B[n], {n, 0, nn}] CoefficientList[Series[Exp[ggf[x Exp[x]]], {x, 0, nn}], x]
CROSSREFS
KEYWORD
nonn
AUTHOR
Geoffrey Critzer, Jun 06 2024
STATUS
approved