A380525 - cp's OEIS frontend

A380525 Squarefree numbers k such that for all factorizations of k as xy, the sum (x y') + (x' * y) is carryless when the addition is done in the primorial base, A049345. Here n' stands for A003415(n), the arithmetic derivative of n.

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	7
7	11
8	13
9	14
10	17
11	19
12	23
13	26
14	29
15	31
16	37
17	38
18	41
19	43
20	47
21	53
22	59
23	61
24	62
25	67
26	70
27	71
28	73
29	74
30	79
31	83
32	86
33	89
34	97
35	101
36	103
37	107
38	109
39	113
40	122
41	127
42	131
43	134
44	137
45	139
46	146
47	149
48	151
49	154
50	157
51	158
52	163
53	167
54	173
55	179
56	181
57	186
58	190
59	191
60	193
61	194
62	195
63	197
64	199
65	206
66	211
67	218
68	223
69	227
70	229
71	233

[1, 2, 3, 5, 6, 7, 11, 13, 14, 17, 19, 23, 26, 29, 31, 37, 38, 41, 43, 47, 53, 59, 61, 62, 67, 70, 71, 73, 74, 79, 83, 86, 89, 97, 101, 103, 107, 109, 113, 122, 127, 131, 134, 137, 139, 146, 149, 151, 154, 157, 158, 163, 167, 173, 179, 181, 186, 190, 191, 193, 194, 195, 197, 199, 206, 211, 218, 223, 227, 229, 233]

cp's OEIS Frontend

A380525 Squarefree numbers k such that for all factorizations of k as xy, the sum (x y') + (x' * y) is carryless when the addition is done in the primorial base, A049345. Here n' stands for A003415(n), the arithmetic derivative of n.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	7
7	11
8	13
9	14
10	17
11	19
12	23
13	26
14	29
15	31
16	37
17	38
18	41
19	43
20	47
21	53
22	59
23	61
24	62
25	67
26	70
27	71
28	73
29	74
30	79
31	83
32	86
33	89
34	97
35	101
36	103
37	107
38	109
39	113
40	122
41	127
42	131
43	134
44	137
45	139
46	146
47	149
48	151
49	154
50	157
51	158
52	163
53	167
54	173
55	179
56	181
57	186
58	190
59	191
60	193
61	194
62	195
63	197
64	199
65	206
66	211
67	218
68	223
69	227
70	229
71	233

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	7
7	11
8	13
9	14
10	17
11	19
12	23
13	26
14	29
15	31
16	37
17	38
18	41
19	43
20	47
21	53
22	59
23	61
24	62
25	67
26	70
27	71
28	73
29	74
30	79
31	83
32	86
33	89
34	97
35	101
36	103
37	107
38	109
39	113
40	122
41	127
42	131
43	134
44	137
45	139
46	146
47	149
48	151
49	154
50	157
51	158
52	163
53	167
54	173
55	179
56	181
57	186
58	190
59	191
60	193
61	194
62	195
63	197
64	199
65	206
66	211
67	218
68	223
69	227
70	229
71	233

cp's OEIS Frontend

A380525 Squarefree numbers k such that for all factorizations of k as x*y, the sum (x * y') + (x' * y) is carryless when the addition is done in the primorial base, A049345. Here n' stands for A003415(n), the arithmetic derivative of n.

Table of values

List of values

A380525 Squarefree numbers k such that for all factorizations of k as xy, the sum (x y') + (x' * y) is carryless when the addition is done in the primorial base, A049345. Here n' stands for A003415(n), the arithmetic derivative of n.

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	7
7	11
8	13
9	14
10	17
11	19
12	23
13	26
14	29
15	31
16	37
17	38
18	41
19	43
20	47
21	53
22	59
23	61
24	62
25	67
26	70
27	71
28	73
29	74
30	79
31	83
32	86
33	89
34	97
35	101
36	103
37	107
38	109
39	113
40	122
41	127
42	131
43	134
44	137
45	139
46	146
47	149
48	151
49	154
50	157
51	158
52	163
53	167
54	173
55	179
56	181
57	186
58	190
59	191
60	193
61	194
62	195
63	197
64	199
65	206
66	211
67	218
68	223
69	227
70	229
71	233