A099305 - cp's OEIS frontend

A099305 Number of solutions of the equation (n+k)' = n' + k', with 1 <= k <= 2n, where n' denotes the arithmetic derivative of n.

n	a(n)
1	1
2	2
3	1
4	2
5	1
6	2
7	1
8	2
9	1
10	2
11	2
12	2
13	1
14	3
15	1
16	2
17	1
18	2
19	1
20	2
21	1
22	3
23	1
24	2
25	1
26	3
27	1
28	3
29	2
30	2
31	1
32	2
33	2
34	2
35	2
36	2
37	1
38	3
39	1
40	2
41	1
42	3
43	1
44	3
45	1
46	2
47	2
48	2
49	1
50	3
51	1
52	3
53	1
54	2
55	3
56	3
57	1
58	3
59	1
60	2
61	1
62	3
63	1
64	2
65	1
66	3
67	2
68	2
69	1
70	4
71	1
72	2
73	1
74	2
75	1
76	3
77	2
78	3
79	2
80	2
81	2
82	2
83	3
84	3
85	2
86	2
87	2
88	3
89	1
90	2
91	2
92	2
93	1
94	3
95	2
96	2
97	1
98	3
99	3
100	3
101	1
102	2
103	2
104	3
105	2

[1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 1, 3, 1, 2, 1, 2, 1, 2, 1, 3, 1, 2, 1, 3, 1, 3, 2, 2, 1, 2, 2, 2, 2, 2, 1, 3, 1, 2, 1, 3, 1, 3, 1, 2, 2, 2, 1, 3, 1, 3, 1, 2, 3, 3, 1, 3, 1, 2, 1, 3, 1, 2, 1, 3, 2, 2, 1, 4, 1, 2, 1, 2, 1, 3, 2, 3, 2, 2, 2, 2, 3, 3, 2, 2, 2, 3, 1, 2, 2, 2, 1, 3, 2, 2, 1, 3, 3, 3, 1, 2, 2, 3, 2]

cp's OEIS Frontend

A099305 Number of solutions of the equation (n+k)' = n' + k', with 1 <= k <= 2n, where n' denotes the arithmetic derivative of n.

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	2
5	1
6	2
7	1
8	2
9	1
10	2
11	2
12	2
13	1
14	3
15	1
16	2
17	1
18	2
19	1
20	2
21	1
22	3
23	1
24	2
25	1
26	3
27	1
28	3
29	2
30	2
31	1
32	2
33	2
34	2
35	2
36	2
37	1
38	3
39	1
40	2
41	1
42	3
43	1
44	3
45	1
46	2
47	2
48	2
49	1
50	3
51	1
52	3
53	1
54	2
55	3
56	3
57	1
58	3
59	1
60	2
61	1
62	3
63	1
64	2
65	1
66	3
67	2
68	2
69	1
70	4
71	1
72	2
73	1
74	2
75	1
76	3
77	2
78	3
79	2
80	2
81	2
82	2
83	3
84	3
85	2
86	2
87	2
88	3
89	1
90	2
91	2
92	2
93	1
94	3
95	2
96	2
97	1
98	3
99	3
100	3
101	1
102	2
103	2
104	3
105	2

n	a(n)
1	1
2	2
3	1
4	2
5	1
6	2
7	1
8	2
9	1
10	2
11	2
12	2
13	1
14	3
15	1
16	2
17	1
18	2
19	1
20	2
21	1
22	3
23	1
24	2
25	1
26	3
27	1
28	3
29	2
30	2
31	1
32	2
33	2
34	2
35	2
36	2
37	1
38	3
39	1
40	2
41	1
42	3
43	1
44	3
45	1
46	2
47	2
48	2
49	1
50	3
51	1
52	3
53	1
54	2
55	3
56	3
57	1
58	3
59	1
60	2
61	1
62	3
63	1
64	2
65	1
66	3
67	2
68	2
69	1
70	4
71	1
72	2
73	1
74	2
75	1
76	3
77	2
78	3
79	2
80	2
81	2
82	2
83	3
84	3
85	2
86	2
87	2
88	3
89	1
90	2
91	2
92	2
93	1
94	3
95	2
96	2
97	1
98	3
99	3
100	3
101	1
102	2
103	2
104	3
105	2

n	a(n)
1	1
2	2
3	1
4	2
5	1
6	2
7	1
8	2
9	1
10	2
11	2
12	2
13	1
14	3
15	1
16	2
17	1
18	2
19	1
20	2
21	1
22	3
23	1
24	2
25	1
26	3
27	1
28	3
29	2
30	2
31	1
32	2
33	2
34	2
35	2
36	2
37	1
38	3
39	1
40	2
41	1
42	3
43	1
44	3
45	1
46	2
47	2
48	2
49	1
50	3
51	1
52	3
53	1
54	2
55	3
56	3
57	1
58	3
59	1
60	2
61	1
62	3
63	1
64	2
65	1
66	3
67	2
68	2
69	1
70	4
71	1
72	2
73	1
74	2
75	1
76	3
77	2
78	3
79	2
80	2
81	2
82	2
83	3
84	3
85	2
86	2
87	2
88	3
89	1
90	2
91	2
92	2
93	1
94	3
95	2
96	2
97	1
98	3
99	3
100	3
101	1
102	2
103	2
104	3
105	2