A351536 - cp's OEIS frontend

A351536 Odd numbers for which sigma(k) is congruent to 2 modulo 4 and the 3-adic valuations of k and sigma(k) are equal.

n	a(n)
1	13
2	37
3	61
4	73
5	97
6	109
7	153
8	157
9	181
10	193
11	229
12	241
13	277
14	313
15	325
16	337
17	349
18	373
19	397
20	409
21	421
22	433
23	457
24	541
25	577
26	601
27	613
28	661
29	673
30	709
31	733
32	757
33	769
34	801
35	829
36	853
37	877
38	925
39	937
40	997
41	1009
42	1021
43	1033
44	1069
45	1093
46	1117
47	1129
48	1153
49	1201
50	1213
51	1237
52	1249
53	1297
54	1321
55	1381
56	1429
57	1453
58	1489
59	1525
60	1549

[13, 37, 61, 73, 97, 109, 153, 157, 181, 193, 229, 241, 277, 313, 325, 337, 349, 373, 397, 409, 421, 433, 457, 541, 577, 601, 613, 661, 673, 709, 733, 757, 769, 801, 829, 853, 877, 925, 937, 997, 1009, 1021, 1033, 1069, 1093, 1117, 1129, 1153, 1201, 1213, 1237, 1249, 1297, 1321, 1381, 1429, 1453, 1489, 1525, 1549]

cp's OEIS Frontend

A351536 Odd numbers for which sigma(k) is congruent to 2 modulo 4 and the 3-adic valuations of k and sigma(k) are equal.

Table of values

List of values