A242417 - cp's OEIS frontend

A242417 Numbers in whose prime factorization both the first differences of indices of distinct primes and their exponents form a palindrome; fixed points of A242419.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	13
12	16
13	17
14	19
15	21
16	23
17	25
18	27
19	29
20	30
21	31
22	32
23	36
24	37
25	41
26	43
27	47
28	49
29	53
30	59
31	61
32	64
33	65
34	67
35	70
36	71
37	73
38	79
39	81
40	83
41	89
42	90
43	97
44	101
45	103
46	107
47	109
48	113
49	121
50	125
51	127
52	128
53	131
54	133
55	137
56	139
57	149
58	151
59	154
60	157
61	163
62	165
63	167
64	169

[1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 16, 17, 19, 21, 23, 25, 27, 29, 30, 31, 32, 36, 37, 41, 43, 47, 49, 53, 59, 61, 64, 65, 67, 70, 71, 73, 79, 81, 83, 89, 90, 97, 101, 103, 107, 109, 113, 121, 125, 127, 128, 131, 133, 137, 139, 149, 151, 154, 157, 163, 165, 167, 169]

cp's OEIS Frontend

A242417 Numbers in whose prime factorization both the first differences of indices of distinct primes and their exponents form a palindrome; fixed points of A242419.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	13
12	16
13	17
14	19
15	21
16	23
17	25
18	27
19	29
20	30
21	31
22	32
23	36
24	37
25	41
26	43
27	47
28	49
29	53
30	59
31	61
32	64
33	65
34	67
35	70
36	71
37	73
38	79
39	81
40	83
41	89
42	90
43	97
44	101
45	103
46	107
47	109
48	113
49	121
50	125
51	127
52	128
53	131
54	133
55	137
56	139
57	149
58	151
59	154
60	157
61	163
62	165
63	167
64	169

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	13
12	16
13	17
14	19
15	21
16	23
17	25
18	27
19	29
20	30
21	31
22	32
23	36
24	37
25	41
26	43
27	47
28	49
29	53
30	59
31	61
32	64
33	65
34	67
35	70
36	71
37	73
38	79
39	81
40	83
41	89
42	90
43	97
44	101
45	103
46	107
47	109
48	113
49	121
50	125
51	127
52	128
53	131
54	133
55	137
56	139
57	149
58	151
59	154
60	157
61	163
62	165
63	167
64	169

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	13
12	16
13	17
14	19
15	21
16	23
17	25
18	27
19	29
20	30
21	31
22	32
23	36
24	37
25	41
26	43
27	47
28	49
29	53
30	59
31	61
32	64
33	65
34	67
35	70
36	71
37	73
38	79
39	81
40	83
41	89
42	90
43	97
44	101
45	103
46	107
47	109
48	113
49	121
50	125
51	127
52	128
53	131
54	133
55	137
56	139
57	149
58	151
59	154
60	157
61	163
62	165
63	167
64	169