A110757 - cp's OEIS frontend

A110757 a(n) = number of divisors of N, where N = reverse concatenation of 1,2,3,...,n.

n	a(n)
1	1
2	4
3	4
4	4
5	8
6	4
7	4
8	12
9	18
10	8
11	4
12	8
13	8
14	16
15	48
16	16
17	96
18	576
19	16
20	32
21	16
22	32
23	16
24	32
25	64
26	256
27	96
28	32
29	128
30	256
31	8
32	64
33	32
34	128
35	384
36	144
37	16
38	8
39	64
40	32
41	256
42	64
43	8
44	192
45	96
46	32
47	128
48	128
49	8
50	64
51	8
52	128
53	1280
54	2560
55	8
56	24
57	16
58	64
59	8
60	8
61	32
62	384
63	48
64	64
65	128
66	128

[1, 4, 4, 4, 8, 4, 4, 12, 18, 8, 4, 8, 8, 16, 48, 16, 96, 576, 16, 32, 16, 32, 16, 32, 64, 256, 96, 32, 128, 256, 8, 64, 32, 128, 384, 144, 16, 8, 64, 32, 256, 64, 8, 192, 96, 32, 128, 128, 8, 64, 8, 128, 1280, 2560, 8, 24, 16, 64, 8, 8, 32, 384, 48, 64, 128, 128]

cp's OEIS Frontend

A110757 a(n) = number of divisors of N, where N = reverse concatenation of 1,2,3,...,n.

Table of values

List of values