A291177 - cp's OEIS frontend

A291177 Numbers k such that s(k) = s(k+1) but phi(k) != phi(k+1), where s(k) = phi(k) + phi(phi(k)) + ... + 1 is the sum of iterated phi (A092693).

n	a(n)
1	45
2	297
3	356
4	375
5	1335
6	1935
7	3915
8	4743
9	5271
10	6015
11	6375
12	6903
13	20894
14	22311
15	25347
16	28118
17	31664
18	32384
19	39632
20	49155
21	50954
22	55935
23	59984
24	64514
25	70275
26	119324
27	125054
28	162944
29	209715
30	334304
31	342975
32	472718
33	767584
34	798567
35	862802
36	908775
37	1280096

[45, 297, 356, 375, 1335, 1935, 3915, 4743, 5271, 6015, 6375, 6903, 20894, 22311, 25347, 28118, 31664, 32384, 39632, 49155, 50954, 55935, 59984, 64514, 70275, 119324, 125054, 162944, 209715, 334304, 342975, 472718, 767584, 798567, 862802, 908775, 1280096]

cp's OEIS Frontend

A291177 Numbers k such that s(k) = s(k+1) but phi(k) != phi(k+1), where s(k) = phi(k) + phi(phi(k)) + ... + 1 is the sum of iterated phi (A092693).

Table of values

List of values