A172448 - cp's OEIS frontend

A172448 a(1) = 1, and for each n >=2, a(n) is the smallest number such that 1/cos(a(n)) < 1/cos(k) for all k < n, so that 1/cos(a(1)) > 1/cos(a(2)) > ... > 1/cos(a(n)) > ...

n	a(n)
1	1
2	2
3	8
4	33
5	344
6	1054
7	1764
8	2474
9	3184
10	3894
11	4604
12	5314
13	6024
14	6734
15	7444
16	8154
17	8864
18	9574
19	10284
20	10994
21	11704
22	12414
23	13124
24	13834
25	14544
26	15254
27	15964
28	16674
29	17384
30	18094
31	18804
32	19514
33	20224
34	20934
35	21644
36	22354
37	23064
38	23774
39	24484

[1, 2, 8, 33, 344, 1054, 1764, 2474, 3184, 3894, 4604, 5314, 6024, 6734, 7444, 8154, 8864, 9574, 10284, 10994, 11704, 12414, 13124, 13834, 14544, 15254, 15964, 16674, 17384, 18094, 18804, 19514, 20224, 20934, 21644, 22354, 23064, 23774, 24484]

cp's OEIS Frontend

A172448 a(1) = 1, and for each n >=2, a(n) is the smallest number such that 1/cos(a(n)) < 1/cos(k) for all k < n, so that 1/cos(a(1)) > 1/cos(a(2)) > ... > 1/cos(a(n)) > ...

Table of values

List of values