A331036 - cp's OEIS frontend

A331036 Odd values of the sum-of-divisors function sigma (A000203), listed by increasing size and with multiplicity.

n	a(n)
1	1
2	3
3	7
4	13
5	15
6	31
7	31
8	39
9	57
10	63
11	91
12	93
13	121
14	127
15	133
16	171
17	183
18	195
19	217
20	255
21	307
22	363
23	381
24	399
25	399
26	403
27	403
28	465
29	511
30	549
31	553
32	741
33	781
34	819
35	847
36	855
37	871
38	921
39	931
40	961
41	993
42	1023
43	1093
44	1143
45	1209
46	1281
47	1407
48	1651
49	1659
50	1723
51	1729
52	1767
53	1767
54	1815
55	1893
56	1953

[1, 3, 7, 13, 15, 31, 31, 39, 57, 63, 91, 93, 121, 127, 133, 171, 183, 195, 217, 255, 307, 363, 381, 399, 399, 403, 403, 465, 511, 549, 553, 741, 781, 819, 847, 855, 871, 921, 931, 961, 993, 1023, 1093, 1143, 1209, 1281, 1407, 1651, 1659, 1723, 1729, 1767, 1767, 1815, 1893, 1953]

cp's OEIS Frontend

A331036 Odd values of the sum-of-divisors function sigma (A000203), listed by increasing size and with multiplicity.

Table of values

List of values