A369963 - cp's OEIS frontend

A369963 Numbers k for which x = gcd(k, A003415(k)) = gcd(k, A276086(k)) and x > 1, where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.

n	a(n)
1	9
2	49
3	99
4	117
5	153
6	171
7	207
8	242
9	245
10	261
11	279
12	333
13	369
14	387
15	423
16	477
17	531
18	549
19	603
20	639
21	657
22	711
23	747
24	801
25	850
26	873
27	909
28	927
29	963
30	981
31	1017
32	1071
33	1125
34	1143
35	1150
36	1179
37	1233
38	1250
39	1251
40	1341
41	1359
42	1413
43	1450
44	1467
45	1503
46	1519
47	1557
48	1611
49	1629
50	1719
51	1737
52	1773
53	1791
54	1899
55	1989
56	2007
57	2043
58	2050
59	2061

[9, 49, 99, 117, 153, 171, 207, 242, 245, 261, 279, 333, 369, 387, 423, 477, 531, 549, 603, 639, 657, 711, 747, 801, 850, 873, 909, 927, 963, 981, 1017, 1071, 1125, 1143, 1150, 1179, 1233, 1250, 1251, 1341, 1359, 1413, 1450, 1467, 1503, 1519, 1557, 1611, 1629, 1719, 1737, 1773, 1791, 1899, 1989, 2007, 2043, 2050, 2061]

cp's OEIS Frontend

A369963 Numbers k for which x = gcd(k, A003415(k)) = gcd(k, A276086(k)) and x > 1, where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.

Table of values

List of values