A337590 - cp's OEIS frontend

A337590 a(0) = 0; a(n) = n - (1/n) * Sum_{k=1..n-1} binomial(n,k)^2 * (n-k) * k * a(k).

n	a(n)
0	0
1	1
2	0
3	-3
4	28
5	-215
6	-174
7	90223
8	-3840472
9	103719537
10	429704110
11	-357346077869
12	35100093531900
13	-2005608652057595
14	-24108041118593418
15	27881407632242902515
16	-4876442148527153942384
17	474102062424164433715937
18	12637408141631813073125094
19	-18867461801192524662360616421

[0, 1, 0, -3, 28, -215, -174, 90223, -3840472, 103719537, 429704110, -357346077869, 35100093531900, -2005608652057595, -24108041118593418, 27881407632242902515, -4876442148527153942384, 474102062424164433715937, 12637408141631813073125094, -18867461801192524662360616421]

cp's OEIS Frontend

A337590 a(0) = 0; a(n) = n - (1/n) * Sum_{k=1..n-1} binomial(n,k)^2 * (n-k) * k * a(k).

Table of values

List of values