A379655 - cp's OEIS frontend

A379655 Numbers k such that k and k+1 are both possible values of the sum of divisors function (A000203).

n	a(n)
1	3
2	6
3	7
4	12
5	13
6	14
7	30
8	31
9	38
10	39
11	56
12	62
13	90
14	120
15	126
16	127
17	132
18	182
19	194
20	216
21	255
22	306
23	307
24	363
25	380
26	398
27	399
28	402
29	464
30	510
31	511
32	548
33	552
34	740
35	780
36	846
37	847
38	854
39	920
40	930
41	960
42	961
43	992
44	1022
45	1023
46	1092
47	1093
48	1280
49	1407
50	1650
51	1658
52	1722
53	1723
54	1728

[3, 6, 7, 12, 13, 14, 30, 31, 38, 39, 56, 62, 90, 120, 126, 127, 132, 182, 194, 216, 255, 306, 307, 363, 380, 398, 399, 402, 464, 510, 511, 548, 552, 740, 780, 846, 847, 854, 920, 930, 960, 961, 992, 1022, 1023, 1092, 1093, 1280, 1407, 1650, 1658, 1722, 1723, 1728]

cp's OEIS Frontend

A379655 Numbers k such that k and k+1 are both possible values of the sum of divisors function (A000203).

Table of values

List of values