A350689 - cp's OEIS frontend

A350689 a(n) = n(1 - (-1)^n - 2(3 + (-1)^n)n^2 + 2n^4)/384.

n	a(n)
0	0
1	0
2	0
3	1
4	4
5	15
6	36
7	84
8	160
9	300
10	500
11	825
12	1260
13	1911
14	2744
15	3920
16	5376
17	7344
18	9720
19	12825
20	16500
21	21175
22	26620
23	33396
24	41184
25	50700
26	61516
27	74529
28	89180
29	106575
30	126000
31	148800
32	174080
33	203456
34	235824
35	273105
36	313956
37	360639
38	411540
39	469300
40	532000
41	602700

[0, 0, 0, 1, 4, 15, 36, 84, 160, 300, 500, 825, 1260, 1911, 2744, 3920, 5376, 7344, 9720, 12825, 16500, 21175, 26620, 33396, 41184, 50700, 61516, 74529, 89180, 106575, 126000, 148800, 174080, 203456, 235824, 273105, 313956, 360639, 411540, 469300, 532000, 602700]

cp's OEIS Frontend

A350689 a(n) = n(1 - (-1)^n - 2(3 + (-1)^n)n^2 + 2n^4)/384.

Table of values

List of values

cp's OEIS Frontend

A350689 a(n) = n*(1 - (-1)^n - 2*(3 + (-1)^n)*n^2 + 2*n^4)/384.

Table of values

List of values

A350689 a(n) = n(1 - (-1)^n - 2(3 + (-1)^n)n^2 + 2n^4)/384.