A081861 - cp's OEIS frontend

A081861 a(n) = (1/24)(sigma_3(2n-1) - sigma_1(2*n-1)).

n	a(n)
1	0
2	1
3	5
4	14
5	31
6	55
7	91
8	146
9	204
10	285
11	400
12	506
13	655
14	850
15	1015
16	1240
17	1552
18	1804
19	2109
20	2562
21	2870
22	3311
23	3971
24	4324
25	4914
26	5730
27	6201
28	6990
29	8000
30	8555
31	9455
32	10846
33	11536
34	12529
35	14192
36	14910
37	16206
38	18371
39	19088
40	20540
41	22990
42	23821
43	25794

[0, 1, 5, 14, 31, 55, 91, 146, 204, 285, 400, 506, 655, 850, 1015, 1240, 1552, 1804, 2109, 2562, 2870, 3311, 3971, 4324, 4914, 5730, 6201, 6990, 8000, 8555, 9455, 10846, 11536, 12529, 14192, 14910, 16206, 18371, 19088, 20540, 22990, 23821, 25794]

cp's OEIS Frontend

A081861 a(n) = (1/24)(sigma_3(2n-1) - sigma_1(2*n-1)).

Table of values

List of values

cp's OEIS Frontend

A081861 a(n) = (1/24)*(sigma_3(2*n-1) - sigma_1(2*n-1)).

Table of values

List of values

A081861 a(n) = (1/24)(sigma_3(2n-1) - sigma_1(2*n-1)).