OFFSET
1,3
COMMENTS
For n > 2, a(n) is the number of minimum vertex colorings of the n-sun graph.
LINKS
Eric Weisstein's World of Mathematics, Minimum Vertex Coloring.
Eric Weisstein's World of Mathematics, Sun Graph.
MATHEMATICA
Table[(n - 2)^n n!, {n, 20}]
CROSSREFS
KEYWORD
sign,easy
AUTHOR
Eric W. Weisstein, Mar 03 2024
STATUS
approved