A359829 - cp's OEIS frontend

A359829 Primitive elements of A235992: numbers k with an even arithmetic derivative that cannot be represented as a product of two smaller such numbers.

n	a(n)
1	1
2	4
3	8
4	9
5	12
6	15
7	20
8	21
9	24
10	25
11	28
12	33
13	35
14	39
15	40
16	44
17	49
18	51
19	52
20	55
21	56
22	57
23	65
24	68
25	69
26	76
27	77
28	85
29	87
30	88
31	91
32	92
33	93
34	95
35	104
36	111
37	115
38	116
39	119
40	121
41	123
42	124
43	129
44	133
45	136
46	141
47	143
48	145
49	148
50	152
51	155
52	159
53	161
54	164
55	169
56	172
57	177
58	183
59	184
60	185
61	187
62	188
63	201
64	203
65	205
66	209
67	212
68	213

[1, 4, 8, 9, 12, 15, 20, 21, 24, 25, 28, 33, 35, 39, 40, 44, 49, 51, 52, 55, 56, 57, 65, 68, 69, 76, 77, 85, 87, 88, 91, 92, 93, 95, 104, 111, 115, 116, 119, 121, 123, 124, 129, 133, 136, 141, 143, 145, 148, 152, 155, 159, 161, 164, 169, 172, 177, 183, 184, 185, 187, 188, 201, 203, 205, 209, 212, 213]

cp's OEIS Frontend

A359829 Primitive elements of A235992: numbers k with an even arithmetic derivative that cannot be represented as a product of two smaller such numbers.

Table of values

List of values

n	a(n)
1	1
2	4
3	8
4	9
5	12
6	15
7	20
8	21
9	24
10	25
11	28
12	33
13	35
14	39
15	40
16	44
17	49
18	51
19	52
20	55
21	56
22	57
23	65
24	68
25	69
26	76
27	77
28	85
29	87
30	88
31	91
32	92
33	93
34	95
35	104
36	111
37	115
38	116
39	119
40	121
41	123
42	124
43	129
44	133
45	136
46	141
47	143
48	145
49	148
50	152
51	155
52	159
53	161
54	164
55	169
56	172
57	177
58	183
59	184
60	185
61	187
62	188
63	201
64	203
65	205
66	209
67	212
68	213

n	a(n)
1	1
2	4
3	8
4	9
5	12
6	15
7	20
8	21
9	24
10	25
11	28
12	33
13	35
14	39
15	40
16	44
17	49
18	51
19	52
20	55
21	56
22	57
23	65
24	68
25	69
26	76
27	77
28	85
29	87
30	88
31	91
32	92
33	93
34	95
35	104
36	111
37	115
38	116
39	119
40	121
41	123
42	124
43	129
44	133
45	136
46	141
47	143
48	145
49	148
50	152
51	155
52	159
53	161
54	164
55	169
56	172
57	177
58	183
59	184
60	185
61	187
62	188
63	201
64	203
65	205
66	209
67	212
68	213

n	a(n)
1	1
2	4
3	8
4	9
5	12
6	15
7	20
8	21
9	24
10	25
11	28
12	33
13	35
14	39
15	40
16	44
17	49
18	51
19	52
20	55
21	56
22	57
23	65
24	68
25	69
26	76
27	77
28	85
29	87
30	88
31	91
32	92
33	93
34	95
35	104
36	111
37	115
38	116
39	119
40	121
41	123
42	124
43	129
44	133
45	136
46	141
47	143
48	145
49	148
50	152
51	155
52	159
53	161
54	164
55	169
56	172
57	177
58	183
59	184
60	185
61	187
62	188
63	201
64	203
65	205
66	209
67	212
68	213