A351355 - cp's OEIS frontend

A351355 Number of ways the numbers from 1..n do not divide numbers from n+1..2n.

n	a(n)
1	0
2	1
3	3
4	8
5	13
6	21
7	31
8	42
9	55
10	71
11	87
12	107
13	128
14	150
15	174
16	203
17	231
18	260
19	294
20	328
21	364
22	404
23	442
24	486
25	530
26	576
27	624
28	674
29	726
30	780
31	838
32	895
33	953
34	1017
35	1079
36	1146
37	1216
38	1284
39	1354
40	1430
41	1505
42	1583
43	1663
44	1745
45	1827
46	1913
47	2001
48	2091
49	2184
50	2275
51	2371
52	2471
53	2567
54	2669
55	2773

[0, 1, 3, 8, 13, 21, 31, 42, 55, 71, 87, 107, 128, 150, 174, 203, 231, 260, 294, 328, 364, 404, 442, 486, 530, 576, 624, 674, 726, 780, 838, 895, 953, 1017, 1079, 1146, 1216, 1284, 1354, 1430, 1505, 1583, 1663, 1745, 1827, 1913, 2001, 2091, 2184, 2275, 2371, 2471, 2567, 2669, 2773]

cp's OEIS Frontend

A351355 Number of ways the numbers from 1..n do not divide numbers from n+1..2n.

Table of values

List of values