A324718 - cp's OEIS frontend

A324718 Odd numbers n for which bitand(2n,sigma(n)) = 2*bitand(n,sigma(n)-n), where bitand is bitwise-AND, A004198.

n	a(n)
1	1
2	5
3	9
4	17
5	37
6	41
7	73
8	137
9	149
10	153
11	257
12	261
13	277
14	293
15	337
16	405
17	521
18	529
19	549
20	577
21	593
22	641
23	661
24	673
25	677
26	1025
27	1033
28	1061
29	1093
30	1097
31	1109
32	1153
33	1193
34	1289
35	1297
36	1301
37	1321
38	1361
39	2053
40	2069
41	2081
42	2089
43	2097
44	2113
45	2129
46	2209
47	2213
48	2225
49	2309
50	2341
51	2377
52	2389
53	2593
54	2633
55	2689
56	2693
57	2729
58	2825
59	4129
60	4133
61	4177
62	4229

[1, 5, 9, 17, 37, 41, 73, 137, 149, 153, 257, 261, 277, 293, 337, 405, 521, 529, 549, 577, 593, 641, 661, 673, 677, 1025, 1033, 1061, 1093, 1097, 1109, 1153, 1193, 1289, 1297, 1301, 1321, 1361, 2053, 2069, 2081, 2089, 2097, 2113, 2129, 2209, 2213, 2225, 2309, 2341, 2377, 2389, 2593, 2633, 2689, 2693, 2729, 2825, 4129, 4133, 4177, 4229]

cp's OEIS Frontend

A324718 Odd numbers n for which bitand(2n,sigma(n)) = 2*bitand(n,sigma(n)-n), where bitand is bitwise-AND, A004198.

Table of values

List of values