A129401 - cp's OEIS frontend

A129401 a(n) is the result of replacing with its successor prime each prime in the factorization of the n-th composite number.

n	a(n)
1	9
2	15
3	27
4	25
5	21
6	45
7	33
8	35
9	81
10	75
11	63
12	55
13	39
14	135
15	49
16	51
17	125
18	99
19	105
20	243
21	65
22	57
23	77
24	225
25	69
26	85
27	189
28	165
29	117
30	175
31	87
32	405
33	121
34	147
35	95
36	153
37	375
38	91
39	297
40	115
41	93
42	315
43	111
44	275
45	729
46	119
47	195
48	171
49	145
50	231
51	675
52	123
53	245
54	207
55	143
56	255
57	567
58	625

[9, 15, 27, 25, 21, 45, 33, 35, 81, 75, 63, 55, 39, 135, 49, 51, 125, 99, 105, 243, 65, 57, 77, 225, 69, 85, 189, 165, 117, 175, 87, 405, 121, 147, 95, 153, 375, 91, 297, 115, 93, 315, 111, 275, 729, 119, 195, 171, 145, 231, 675, 123, 245, 207, 143, 255, 567, 625]

cp's OEIS Frontend

A129401 a(n) is the result of replacing with its successor prime each prime in the factorization of the n-th composite number.

Table of values

List of values

n	a(n)
1	9
2	15
3	27
4	25
5	21
6	45
7	33
8	35
9	81
10	75
11	63
12	55
13	39
14	135
15	49
16	51
17	125
18	99
19	105
20	243
21	65
22	57
23	77
24	225
25	69
26	85
27	189
28	165
29	117
30	175
31	87
32	405
33	121
34	147
35	95
36	153
37	375
38	91
39	297
40	115
41	93
42	315
43	111
44	275
45	729
46	119
47	195
48	171
49	145
50	231
51	675
52	123
53	245
54	207
55	143
56	255
57	567
58	625

n	a(n)
1	9
2	15
3	27
4	25
5	21
6	45
7	33
8	35
9	81
10	75
11	63
12	55
13	39
14	135
15	49
16	51
17	125
18	99
19	105
20	243
21	65
22	57
23	77
24	225
25	69
26	85
27	189
28	165
29	117
30	175
31	87
32	405
33	121
34	147
35	95
36	153
37	375
38	91
39	297
40	115
41	93
42	315
43	111
44	275
45	729
46	119
47	195
48	171
49	145
50	231
51	675
52	123
53	245
54	207
55	143
56	255
57	567
58	625

n	a(n)
1	9
2	15
3	27
4	25
5	21
6	45
7	33
8	35
9	81
10	75
11	63
12	55
13	39
14	135
15	49
16	51
17	125
18	99
19	105
20	243
21	65
22	57
23	77
24	225
25	69
26	85
27	189
28	165
29	117
30	175
31	87
32	405
33	121
34	147
35	95
36	153
37	375
38	91
39	297
40	115
41	93
42	315
43	111
44	275
45	729
46	119
47	195
48	171
49	145
50	231
51	675
52	123
53	245
54	207
55	143
56	255
57	567
58	625