A376457 - cp's OEIS frontend

A376457 Let s(x) be the Maclaurin series for cos(x); then a(n) is the index k for which (k+1)-st partial sum of s(2nPi) is least among all partial sums.

n	a(n)
1	3
2	5
3	9
4	11
5	15
6	19
7	21
8	25
9	27
10	31
11	33
12	37
13	41
14	43
15	47
16	49
17	53
18	55
19	59
20	63
21	65
22	69
23	71
24	75
25	77
26	81
27	85
28	87
29	91
30	93
31	97
32	99
33	103
34	107
35	109
36	113
37	115
38	119
39	121
40	125
41	129
42	131
43	135
44	137
45	141
46	143
47	147
48	151
49	153
50	157
51	159
52	163
53	165
54	169
55	173
56	175
57	179
58	181
59	185

[3, 5, 9, 11, 15, 19, 21, 25, 27, 31, 33, 37, 41, 43, 47, 49, 53, 55, 59, 63, 65, 69, 71, 75, 77, 81, 85, 87, 91, 93, 97, 99, 103, 107, 109, 113, 115, 119, 121, 125, 129, 131, 135, 137, 141, 143, 147, 151, 153, 157, 159, 163, 165, 169, 173, 175, 179, 181, 185]

cp's OEIS Frontend

A376457 Let s(x) be the Maclaurin series for cos(x); then a(n) is the index k for which (k+1)-st partial sum of s(2nPi) is least among all partial sums.

Table of values

List of values

n	a(n)
1	3
2	5
3	9
4	11
5	15
6	19
7	21
8	25
9	27
10	31
11	33
12	37
13	41
14	43
15	47
16	49
17	53
18	55
19	59
20	63
21	65
22	69
23	71
24	75
25	77
26	81
27	85
28	87
29	91
30	93
31	97
32	99
33	103
34	107
35	109
36	113
37	115
38	119
39	121
40	125
41	129
42	131
43	135
44	137
45	141
46	143
47	147
48	151
49	153
50	157
51	159
52	163
53	165
54	169
55	173
56	175
57	179
58	181
59	185

n	a(n)
1	3
2	5
3	9
4	11
5	15
6	19
7	21
8	25
9	27
10	31
11	33
12	37
13	41
14	43
15	47
16	49
17	53
18	55
19	59
20	63
21	65
22	69
23	71
24	75
25	77
26	81
27	85
28	87
29	91
30	93
31	97
32	99
33	103
34	107
35	109
36	113
37	115
38	119
39	121
40	125
41	129
42	131
43	135
44	137
45	141
46	143
47	147
48	151
49	153
50	157
51	159
52	163
53	165
54	169
55	173
56	175
57	179
58	181
59	185

cp's OEIS Frontend

A376457 Let s(x) be the Maclaurin series for cos(x); then a(n) is the index k for which (k+1)-st partial sum of s(2*n*Pi) is least among all partial sums.

Table of values

List of values

A376457 Let s(x) be the Maclaurin series for cos(x); then a(n) is the index k for which (k+1)-st partial sum of s(2nPi) is least among all partial sums.

n	a(n)
1	3
2	5
3	9
4	11
5	15
6	19
7	21
8	25
9	27
10	31
11	33
12	37
13	41
14	43
15	47
16	49
17	53
18	55
19	59
20	63
21	65
22	69
23	71
24	75
25	77
26	81
27	85
28	87
29	91
30	93
31	97
32	99
33	103
34	107
35	109
36	113
37	115
38	119
39	121
40	125
41	129
42	131
43	135
44	137
45	141
46	143
47	147
48	151
49	153
50	157
51	159
52	163
53	165
54	169
55	173
56	175
57	179
58	181
59	185