A033099 - cp's OEIS frontend

A033099 Number of 3's when n is written in base b for 2<=b<=n+1.

n	a(n)
1	0
2	0
3	1
4	0
5	0
6	0
7	1
8	1
9	1
10	1
11	2
12	2
13	3
14	2
15	5
16	2
17	3
18	4
19	5
20	2
21	5
22	3
23	6
24	4
25	4
26	3
27	8
28	5
29	5
30	6
31	8
32	3
33	8
34	4
35	7
36	5
37	5
38	6
39	10
40	5
41	6
42	7
43	11
44	6
45	10
46	6
47	9
48	9
49	7
50	6
51	13
52	7
53	9
54	9
55	11
56	7
57	12
58	10
59	13
60	9
61	9
62	8
63	17
64	6
65	8
66	11
67	12
68	9
69	12
70	8
71	11
72	9
73	13
74	8
75	18
76	10
77	10
78	13
79	13
80	10

[0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 2, 5, 2, 3, 4, 5, 2, 5, 3, 6, 4, 4, 3, 8, 5, 5, 6, 8, 3, 8, 4, 7, 5, 5, 6, 10, 5, 6, 7, 11, 6, 10, 6, 9, 9, 7, 6, 13, 7, 9, 9, 11, 7, 12, 10, 13, 9, 9, 8, 17, 6, 8, 11, 12, 9, 12, 8, 11, 9, 13, 8, 18, 10, 10, 13, 13, 10]

cp's OEIS Frontend

A033099 Number of 3's when n is written in base b for 2<=b<=n+1.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	0
6	0
7	1
8	1
9	1
10	1
11	2
12	2
13	3
14	2
15	5
16	2
17	3
18	4
19	5
20	2
21	5
22	3
23	6
24	4
25	4
26	3
27	8
28	5
29	5
30	6
31	8
32	3
33	8
34	4
35	7
36	5
37	5
38	6
39	10
40	5
41	6
42	7
43	11
44	6
45	10
46	6
47	9
48	9
49	7
50	6
51	13
52	7
53	9
54	9
55	11
56	7
57	12
58	10
59	13
60	9
61	9
62	8
63	17
64	6
65	8
66	11
67	12
68	9
69	12
70	8
71	11
72	9
73	13
74	8
75	18
76	10
77	10
78	13
79	13
80	10

n	a(n)
1	0
2	0
3	1
4	0
5	0
6	0
7	1
8	1
9	1
10	1
11	2
12	2
13	3
14	2
15	5
16	2
17	3
18	4
19	5
20	2
21	5
22	3
23	6
24	4
25	4
26	3
27	8
28	5
29	5
30	6
31	8
32	3
33	8
34	4
35	7
36	5
37	5
38	6
39	10
40	5
41	6
42	7
43	11
44	6
45	10
46	6
47	9
48	9
49	7
50	6
51	13
52	7
53	9
54	9
55	11
56	7
57	12
58	10
59	13
60	9
61	9
62	8
63	17
64	6
65	8
66	11
67	12
68	9
69	12
70	8
71	11
72	9
73	13
74	8
75	18
76	10
77	10
78	13
79	13
80	10

n	a(n)
1	0
2	0
3	1
4	0
5	0
6	0
7	1
8	1
9	1
10	1
11	2
12	2
13	3
14	2
15	5
16	2
17	3
18	4
19	5
20	2
21	5
22	3
23	6
24	4
25	4
26	3
27	8
28	5
29	5
30	6
31	8
32	3
33	8
34	4
35	7
36	5
37	5
38	6
39	10
40	5
41	6
42	7
43	11
44	6
45	10
46	6
47	9
48	9
49	7
50	6
51	13
52	7
53	9
54	9
55	11
56	7
57	12
58	10
59	13
60	9
61	9
62	8
63	17
64	6
65	8
66	11
67	12
68	9
69	12
70	8
71	11
72	9
73	13
74	8
75	18
76	10
77	10
78	13
79	13
80	10