A371701 - cp's OEIS frontend

A371701 a(n) is the least positive k such that Product_{i=1..k} 1 / (1 - 1/(2*i+1)) >= n.

n	a(n)
0	1
1	1
2	3
3	7
4	12
5	19
6	28
7	38
8	50
9	63
10	78
11	95
12	113
13	132
14	154
15	176
16	201
17	227
18	254
19	283
20	314
21	346
22	380
23	415
24	452
25	491
26	531
27	572
28	616
29	660
30	707
31	755
32	804
33	855
34	908
35	962
36	1018
37	1075
38	1134
39	1194
40	1256
41	1320
42	1385
43	1452
44	1520
45	1590
46	1662
47	1735
48	1809
49	1885
50	1963
51	2043
52	2123
53	2206
54	2290
55	2376

[1, 1, 3, 7, 12, 19, 28, 38, 50, 63, 78, 95, 113, 132, 154, 176, 201, 227, 254, 283, 314, 346, 380, 415, 452, 491, 531, 572, 616, 660, 707, 755, 804, 855, 908, 962, 1018, 1075, 1134, 1194, 1256, 1320, 1385, 1452, 1520, 1590, 1662, 1735, 1809, 1885, 1963, 2043, 2123, 2206, 2290, 2376]

cp's OEIS Frontend

A371701 a(n) is the least positive k such that Product_{i=1..k} 1 / (1 - 1/(2*i+1)) >= n.

Table of values

List of values