A087741 - cp's OEIS frontend

A087741 a(n) = 1+Abs[A000040[A004001[n]]-A004001[A000040[n]]].

n	a(n)
1	2
2	1
3	1
4	2
5	3
6	2
7	3
8	5
9	4
10	4
11	2
12	5
13	6
14	7
15	9
16	12
17	10
18	4
19	5
20	2
21	4
22	5
23	5
24	9
25	9
26	11
27	12
28	7
29	8
30	10
31	12
32	15
33	14
34	14
35	16
36	13
37	14
38	19
39	16
40	15
41	13
42	14
43	10
44	7
45	10
46	9
47	14
48	19
49	15
50	15
51	16
52	14
53	14
54	16
55	3
56	9
57	14
58	16
59	17
60	20
61	21
62	27
63	39
64	41
65	36
66	37
67	36
68	38
69	36
70	30
71	34
72	34
73	33
74	30
75	31
76	32
77	26
78	28
79	26
80	29

[2, 1, 1, 2, 3, 2, 3, 5, 4, 4, 2, 5, 6, 7, 9, 12, 10, 4, 5, 2, 4, 5, 5, 9, 9, 11, 12, 7, 8, 10, 12, 15, 14, 14, 16, 13, 14, 19, 16, 15, 13, 14, 10, 7, 10, 9, 14, 19, 15, 15, 16, 14, 14, 16, 3, 9, 14, 16, 17, 20, 21, 27, 39, 41, 36, 37, 36, 38, 36, 30, 34, 34, 33, 30, 31, 32, 26, 28, 26, 29]

cp's OEIS Frontend

A087741 a(n) = 1+Abs[A000040[A004001[n]]-A004001[A000040[n]]].

Table of values

List of values

n	a(n)
1	2
2	1
3	1
4	2
5	3
6	2
7	3
8	5
9	4
10	4
11	2
12	5
13	6
14	7
15	9
16	12
17	10
18	4
19	5
20	2
21	4
22	5
23	5
24	9
25	9
26	11
27	12
28	7
29	8
30	10
31	12
32	15
33	14
34	14
35	16
36	13
37	14
38	19
39	16
40	15
41	13
42	14
43	10
44	7
45	10
46	9
47	14
48	19
49	15
50	15
51	16
52	14
53	14
54	16
55	3
56	9
57	14
58	16
59	17
60	20
61	21
62	27
63	39
64	41
65	36
66	37
67	36
68	38
69	36
70	30
71	34
72	34
73	33
74	30
75	31
76	32
77	26
78	28
79	26
80	29

n	a(n)
1	2
2	1
3	1
4	2
5	3
6	2
7	3
8	5
9	4
10	4
11	2
12	5
13	6
14	7
15	9
16	12
17	10
18	4
19	5
20	2
21	4
22	5
23	5
24	9
25	9
26	11
27	12
28	7
29	8
30	10
31	12
32	15
33	14
34	14
35	16
36	13
37	14
38	19
39	16
40	15
41	13
42	14
43	10
44	7
45	10
46	9
47	14
48	19
49	15
50	15
51	16
52	14
53	14
54	16
55	3
56	9
57	14
58	16
59	17
60	20
61	21
62	27
63	39
64	41
65	36
66	37
67	36
68	38
69	36
70	30
71	34
72	34
73	33
74	30
75	31
76	32
77	26
78	28
79	26
80	29

n	a(n)
1	2
2	1
3	1
4	2
5	3
6	2
7	3
8	5
9	4
10	4
11	2
12	5
13	6
14	7
15	9
16	12
17	10
18	4
19	5
20	2
21	4
22	5
23	5
24	9
25	9
26	11
27	12
28	7
29	8
30	10
31	12
32	15
33	14
34	14
35	16
36	13
37	14
38	19
39	16
40	15
41	13
42	14
43	10
44	7
45	10
46	9
47	14
48	19
49	15
50	15
51	16
52	14
53	14
54	16
55	3
56	9
57	14
58	16
59	17
60	20
61	21
62	27
63	39
64	41
65	36
66	37
67	36
68	38
69	36
70	30
71	34
72	34
73	33
74	30
75	31
76	32
77	26
78	28
79	26
80	29