|
|
A258384
|
|
a(n) = n^(n-1) * (n+1)^n.
|
|
2
|
|
|
2, 18, 576, 40000, 4860000, 914838624, 246727835648, 90275517038592, 43046721000000000, 25937424601000000000, 19271723592631858495488, 17310672267004940730236928, 18492034350245752657180811264, 23170856660867919150000000000000
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
FORMULA
|
a(n) = n^(n-1) * (n+1)^n.
|
|
EXAMPLE
|
a(3) = (3+1)^3 * 3^(3-1) = 4^3 * 3^2 = 64 * 9 = 576.
|
|
MATHEMATICA
|
|
|
PROG
|
(Sidef)
func a(n) {
(n+1)**n * n**(n-1);
};
1.to(Math.inf).each { |n|
say a(n);
};
|
|
CROSSREFS
|
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|