A322256 - cp's OEIS frontend

A322256 Numbers k such that t(k) = t(k+1) where t(k) = tau(k) + sigma(k) = A007503(k) is the number of subgroups of the dihedral group of order 2k.

n	a(n)
1	14
2	1334
3	1634
4	2685
5	33998
6	42818
7	64665
8	84134
9	109214
10	122073
11	166934
12	289454
13	383594
14	440013
15	544334
16	605985
17	649154
18	655005
19	792855
20	845126
21	1642154
22	2284814
23	2305557
24	2913105
25	3571905
26	3682622
27	4701537
28	5181045
29	6431732
30	6444873
31	6771405
32	10074477

[14, 1334, 1634, 2685, 33998, 42818, 64665, 84134, 109214, 122073, 166934, 289454, 383594, 440013, 544334, 605985, 649154, 655005, 792855, 845126, 1642154, 2284814, 2305557, 2913105, 3571905, 3682622, 4701537, 5181045, 6431732, 6444873, 6771405, 10074477]

cp's OEIS Frontend

A322256 Numbers k such that t(k) = t(k+1) where t(k) = tau(k) + sigma(k) = A007503(k) is the number of subgroups of the dihedral group of order 2k.

Table of values

List of values