A359831 - cp's OEIS frontend

A359831 Nonprimitive elements of A235992: numbers k such that their arithmetic derivative (A003415) is even, and also for some divisor d|k, 1 both d and k/d have even derivative.

n	a(n)
1	16
2	32
3	36
4	48
5	60
6	64
7	72
8	80
9	81
10	84
11	96
12	100
13	108
14	112
15	120
16	128
17	132
18	135
19	140
20	144
21	156
22	160
23	168
24	176
25	180
26	189
27	192
28	196
29	200
30	204
31	208
32	216
33	220
34	224
35	225
36	228
37	240
38	252
39	256
40	260
41	264
42	272
43	276
44	280
45	288
46	297
47	300
48	304
49	308
50	312
51	315
52	320
53	324
54	336
55	340
56	348
57	351
58	352
59	360
60	364
61	368
62	372
63	375

[16, 32, 36, 48, 60, 64, 72, 80, 81, 84, 96, 100, 108, 112, 120, 128, 132, 135, 140, 144, 156, 160, 168, 176, 180, 189, 192, 196, 200, 204, 208, 216, 220, 224, 225, 228, 240, 252, 256, 260, 264, 272, 276, 280, 288, 297, 300, 304, 308, 312, 315, 320, 324, 336, 340, 348, 351, 352, 360, 364, 368, 372, 375]

cp's OEIS Frontend

A359831 Nonprimitive elements of A235992: numbers k such that their arithmetic derivative (A003415) is even, and also for some divisor d|k, 1 both d and k/d have even derivative.

Table of values

List of values

n	a(n)
1	16
2	32
3	36
4	48
5	60
6	64
7	72
8	80
9	81
10	84
11	96
12	100
13	108
14	112
15	120
16	128
17	132
18	135
19	140
20	144
21	156
22	160
23	168
24	176
25	180
26	189
27	192
28	196
29	200
30	204
31	208
32	216
33	220
34	224
35	225
36	228
37	240
38	252
39	256
40	260
41	264
42	272
43	276
44	280
45	288
46	297
47	300
48	304
49	308
50	312
51	315
52	320
53	324
54	336
55	340
56	348
57	351
58	352
59	360
60	364
61	368
62	372
63	375

n	a(n)
1	16
2	32
3	36
4	48
5	60
6	64
7	72
8	80
9	81
10	84
11	96
12	100
13	108
14	112
15	120
16	128
17	132
18	135
19	140
20	144
21	156
22	160
23	168
24	176
25	180
26	189
27	192
28	196
29	200
30	204
31	208
32	216
33	220
34	224
35	225
36	228
37	240
38	252
39	256
40	260
41	264
42	272
43	276
44	280
45	288
46	297
47	300
48	304
49	308
50	312
51	315
52	320
53	324
54	336
55	340
56	348
57	351
58	352
59	360
60	364
61	368
62	372
63	375

n	a(n)
1	16
2	32
3	36
4	48
5	60
6	64
7	72
8	80
9	81
10	84
11	96
12	100
13	108
14	112
15	120
16	128
17	132
18	135
19	140
20	144
21	156
22	160
23	168
24	176
25	180
26	189
27	192
28	196
29	200
30	204
31	208
32	216
33	220
34	224
35	225
36	228
37	240
38	252
39	256
40	260
41	264
42	272
43	276
44	280
45	288
46	297
47	300
48	304
49	308
50	312
51	315
52	320
53	324
54	336
55	340
56	348
57	351
58	352
59	360
60	364
61	368
62	372
63	375