A255335 - cp's OEIS frontend

A255335 Numbers n for which there exists k < n such that A000203(k) = A000203(n) and A007947(k) = A007947(n), where A000203 gives the sum of divisors, and A007947 gives the squarefree kernel of n.

n	a(n)
1	2058
2	10290
3	22638
4	26754
5	34986
6	39102
7	47334
8	51450
9	52728
10	59682
11	63798
12	76146
13	84378
14	88494
15	96726
16	109074
17	113190
18	121422
19	125538
20	133770
21	137886
22	146118
23	150234
24	162582
25	170814
26	174930
27	183162
28	195510
29	199626
30	207858
31	211974
32	220206
33	224322
34	232554
35	236670
36	249018
37	257250
38	261366
39	263640
40	269598
41	281946
42	286062
43	294294

[2058, 10290, 22638, 26754, 34986, 39102, 47334, 51450, 52728, 59682, 63798, 76146, 84378, 88494, 96726, 109074, 113190, 121422, 125538, 133770, 137886, 146118, 150234, 162582, 170814, 174930, 183162, 195510, 199626, 207858, 211974, 220206, 224322, 232554, 236670, 249018, 257250, 261366, 263640, 269598, 281946, 286062, 294294]

cp's OEIS Frontend

A255335 Numbers n for which there exists k < n such that A000203(k) = A000203(n) and A007947(k) = A007947(n), where A000203 gives the sum of divisors, and A007947 gives the squarefree kernel of n.

Table of values

List of values