A330702 - cp's OEIS frontend

A330702 Numbers k such that psi(k) = psi(k + 2) and phi(k) = phi(k + 2), where psi(k) is the Dedekind psi function (A001615) and phi(k) is the Euler totient function (A000010).

n	a(n)
1	70
2	308
3	572
4	2132
5	4292
6	6764
7	12212
8	32804
9	72836
10	79292
11	169724
12	198596
13	207692
14	289052
15	362972
16	392426
17	545876
18	547724
19	611612
20	651932
21	678812
22	687812
23	809252
24	842012
25	868436
26	930932
27	1030772
28	1032956
29	1122932
30	1336052
31	1627772
32	1705892
33	1722932
34	2173772

[70, 308, 572, 2132, 4292, 6764, 12212, 32804, 72836, 79292, 169724, 198596, 207692, 289052, 362972, 392426, 545876, 547724, 611612, 651932, 678812, 687812, 809252, 842012, 868436, 930932, 1030772, 1032956, 1122932, 1336052, 1627772, 1705892, 1722932, 2173772]

cp's OEIS Frontend

A330702 Numbers k such that psi(k) = psi(k + 2) and phi(k) = phi(k + 2), where psi(k) is the Dedekind psi function (A001615) and phi(k) is the Euler totient function (A000010).

Table of values

List of values