A265894 - cp's OEIS frontend

A265894 a(n) = A099563(A001813(n)); the most significant digit in factorial base representation of (2n)! / n!.

n	a(n)
0	1
1	1
2	2
3	1
4	2
5	6
6	1
7	4
8	1
9	2
10	7
11	1
12	3
13	10
14	1
15	3
16	11
17	1
18	3
19	10
20	1
21	3
22	8
23	25
24	2
25	6
26	19
27	1
28	4
29	13
30	38
31	2
32	7
33	23
34	1
35	4
36	13
37	39
38	2
39	6
40	20
41	1
42	3
43	9
44	29
45	1
46	4
47	13
48	40
49	1
50	5
51	16
52	51
53	2
54	6
55	20
56	62
57	2
58	7
59	23
60	70
61	2
62	8
63	25
64	77
65	2
66	8
67	25
68	79
69	2
70	8
71	25
72	78
73	2
74	7
75	23
76	73
77	2
78	6
79	21
80	66
81	1
82	6
83	18
84	57
85	1
86	4
87	15
88	47
89	1
90	3
91	12
92	38
93	118
94	3
95	9

[1, 1, 2, 1, 2, 6, 1, 4, 1, 2, 7, 1, 3, 10, 1, 3, 11, 1, 3, 10, 1, 3, 8, 25, 2, 6, 19, 1, 4, 13, 38, 2, 7, 23, 1, 4, 13, 39, 2, 6, 20, 1, 3, 9, 29, 1, 4, 13, 40, 1, 5, 16, 51, 2, 6, 20, 62, 2, 7, 23, 70, 2, 8, 25, 77, 2, 8, 25, 79, 2, 8, 25, 78, 2, 7, 23, 73, 2, 6, 21, 66, 1, 6, 18, 57, 1, 4, 15, 47, 1, 3, 12, 38, 118, 3, 9]

cp's OEIS Frontend

A265894 a(n) = A099563(A001813(n)); the most significant digit in factorial base representation of (2n)! / n!.

Table of values

List of values

n	a(n)
0	1
1	1
2	2
3	1
4	2
5	6
6	1
7	4
8	1
9	2
10	7
11	1
12	3
13	10
14	1
15	3
16	11
17	1
18	3
19	10
20	1
21	3
22	8
23	25
24	2
25	6
26	19
27	1
28	4
29	13
30	38
31	2
32	7
33	23
34	1
35	4
36	13
37	39
38	2
39	6
40	20
41	1
42	3
43	9
44	29
45	1
46	4
47	13
48	40
49	1
50	5
51	16
52	51
53	2
54	6
55	20
56	62
57	2
58	7
59	23
60	70
61	2
62	8
63	25
64	77
65	2
66	8
67	25
68	79
69	2
70	8
71	25
72	78
73	2
74	7
75	23
76	73
77	2
78	6
79	21
80	66
81	1
82	6
83	18
84	57
85	1
86	4
87	15
88	47
89	1
90	3
91	12
92	38
93	118
94	3
95	9

n	a(n)
0	1
1	1
2	2
3	1
4	2
5	6
6	1
7	4
8	1
9	2
10	7
11	1
12	3
13	10
14	1
15	3
16	11
17	1
18	3
19	10
20	1
21	3
22	8
23	25
24	2
25	6
26	19
27	1
28	4
29	13
30	38
31	2
32	7
33	23
34	1
35	4
36	13
37	39
38	2
39	6
40	20
41	1
42	3
43	9
44	29
45	1
46	4
47	13
48	40
49	1
50	5
51	16
52	51
53	2
54	6
55	20
56	62
57	2
58	7
59	23
60	70
61	2
62	8
63	25
64	77
65	2
66	8
67	25
68	79
69	2
70	8
71	25
72	78
73	2
74	7
75	23
76	73
77	2
78	6
79	21
80	66
81	1
82	6
83	18
84	57
85	1
86	4
87	15
88	47
89	1
90	3
91	12
92	38
93	118
94	3
95	9

n	a(n)
0	1
1	1
2	2
3	1
4	2
5	6
6	1
7	4
8	1
9	2
10	7
11	1
12	3
13	10
14	1
15	3
16	11
17	1
18	3
19	10
20	1
21	3
22	8
23	25
24	2
25	6
26	19
27	1
28	4
29	13
30	38
31	2
32	7
33	23
34	1
35	4
36	13
37	39
38	2
39	6
40	20
41	1
42	3
43	9
44	29
45	1
46	4
47	13
48	40
49	1
50	5
51	16
52	51
53	2
54	6
55	20
56	62
57	2
58	7
59	23
60	70
61	2
62	8
63	25
64	77
65	2
66	8
67	25
68	79
69	2
70	8
71	25
72	78
73	2
74	7
75	23
76	73
77	2
78	6
79	21
80	66
81	1
82	6
83	18
84	57
85	1
86	4
87	15
88	47
89	1
90	3
91	12
92	38
93	118
94	3
95	9