A347882 - cp's OEIS frontend

A347882 Odd numbers k for which A003415(sigma(k^2))-(k^2) is strictly positive and a multiple of 3. Here A003415 is the arithmetic derivative.

n	a(n)
1	273
2	399
3	651
4	741
5	777
6	819
7	903
8	1197
9	1209
10	1281
11	1365
12	1407
13	1443
14	1533
15	1659
16	1677
17	1767
18	1925
19	1953
20	1995
21	2035
22	2037
23	2109
24	2163
25	2223
26	2289
27	2331
28	2379
29	2451
30	2457
31	2613
32	2667
33	2709
34	2847
35	2919
36	3003
37	3081
38	3171
39	3255
40	3297
41	3423
42	3441
43	3477
44	3591
45	3627
46	3685
47	3705
48	3783
49	3801
50	3819
51	3843
52	3885
53	3999
54	4017

[273, 399, 651, 741, 777, 819, 903, 1197, 1209, 1281, 1365, 1407, 1443, 1533, 1659, 1677, 1767, 1925, 1953, 1995, 2035, 2037, 2109, 2163, 2223, 2289, 2331, 2379, 2451, 2457, 2613, 2667, 2709, 2847, 2919, 3003, 3081, 3171, 3255, 3297, 3423, 3441, 3477, 3591, 3627, 3685, 3705, 3783, 3801, 3819, 3843, 3885, 3999, 4017]

cp's OEIS Frontend

A347882 Odd numbers k for which A003415(sigma(k^2))-(k^2) is strictly positive and a multiple of 3. Here A003415 is the arithmetic derivative.

Table of values

List of values