A368047 - cp's OEIS frontend

A368047 a(n) = (-1)^n * n(n + 1)(2n + (-1)^n (4*n + 5) + 1) / 12.

n	a(n)
0	0
1	1
2	9
3	10
4	50
5	35
6	147
7	84
8	324
9	165
10	605
11	286
12	1014
13	455
14	1575
15	680
16	2312
17	969
18	3249
19	1330
20	4410
21	1771
22	5819
23	2300
24	7500
25	2925
26	9477
27	3654
28	11774
29	4495
30	14415
31	5456
32	17424
33	6545
34	20825
35	7770
36	24642
37	9139
38	28899
39	10660
40	33620
41	12341

[0, 1, 9, 10, 50, 35, 147, 84, 324, 165, 605, 286, 1014, 455, 1575, 680, 2312, 969, 3249, 1330, 4410, 1771, 5819, 2300, 7500, 2925, 9477, 3654, 11774, 4495, 14415, 5456, 17424, 6545, 20825, 7770, 24642, 9139, 28899, 10660, 33620, 12341]

cp's OEIS Frontend

A368047 a(n) = (-1)^n * n(n + 1)(2n + (-1)^n (4*n + 5) + 1) / 12.

Table of values

List of values

cp's OEIS Frontend

A368047 a(n) = (-1)^n * n*(n + 1)*(2*n + (-1)^n * (4*n + 5) + 1) / 12.

Table of values

List of values

A368047 a(n) = (-1)^n * n(n + 1)(2n + (-1)^n (4*n + 5) + 1) / 12.