A376456 - cp's OEIS frontend

A376456 Let s(x) be the Maclaurin series for cos(x); then a(n) is the index k for which the (k+1)-st partial sum of s(2nPi) is greatest among all partial sums.

n	a(n)
1	2
2	6
3	8
4	12
5	14
6	18
7	22
8	24
9	28
10	30
11	34
12	36
13	40
14	44
15	46
16	50
17	52
18	56
19	58
20	62
21	66
22	68
23	72
24	74
25	78
26	80
27	84
28	88
29	90
30	94
31	96
32	100
33	102
34	106
35	110
36	112
37	116
38	118
39	122
40	124
41	128
42	132
43	134
44	138
45	140
46	144
47	146
48	150
49	154
50	156
51	160
52	162
53	166
54	168
55	172
56	176
57	178
58	182

[2, 6, 8, 12, 14, 18, 22, 24, 28, 30, 34, 36, 40, 44, 46, 50, 52, 56, 58, 62, 66, 68, 72, 74, 78, 80, 84, 88, 90, 94, 96, 100, 102, 106, 110, 112, 116, 118, 122, 124, 128, 132, 134, 138, 140, 144, 146, 150, 154, 156, 160, 162, 166, 168, 172, 176, 178, 182]

cp's OEIS Frontend

A376456 Let s(x) be the Maclaurin series for cos(x); then a(n) is the index k for which the (k+1)-st partial sum of s(2nPi) is greatest among all partial sums.

Table of values

List of values

n	a(n)
1	2
2	6
3	8
4	12
5	14
6	18
7	22
8	24
9	28
10	30
11	34
12	36
13	40
14	44
15	46
16	50
17	52
18	56
19	58
20	62
21	66
22	68
23	72
24	74
25	78
26	80
27	84
28	88
29	90
30	94
31	96
32	100
33	102
34	106
35	110
36	112
37	116
38	118
39	122
40	124
41	128
42	132
43	134
44	138
45	140
46	144
47	146
48	150
49	154
50	156
51	160
52	162
53	166
54	168
55	172
56	176
57	178
58	182

n	a(n)
1	2
2	6
3	8
4	12
5	14
6	18
7	22
8	24
9	28
10	30
11	34
12	36
13	40
14	44
15	46
16	50
17	52
18	56
19	58
20	62
21	66
22	68
23	72
24	74
25	78
26	80
27	84
28	88
29	90
30	94
31	96
32	100
33	102
34	106
35	110
36	112
37	116
38	118
39	122
40	124
41	128
42	132
43	134
44	138
45	140
46	144
47	146
48	150
49	154
50	156
51	160
52	162
53	166
54	168
55	172
56	176
57	178
58	182

cp's OEIS Frontend

A376456 Let s(x) be the Maclaurin series for cos(x); then a(n) is the index k for which the (k+1)-st partial sum of s(2*n*Pi) is greatest among all partial sums.

Table of values

List of values

A376456 Let s(x) be the Maclaurin series for cos(x); then a(n) is the index k for which the (k+1)-st partial sum of s(2nPi) is greatest among all partial sums.

n	a(n)
1	2
2	6
3	8
4	12
5	14
6	18
7	22
8	24
9	28
10	30
11	34
12	36
13	40
14	44
15	46
16	50
17	52
18	56
19	58
20	62
21	66
22	68
23	72
24	74
25	78
26	80
27	84
28	88
29	90
30	94
31	96
32	100
33	102
34	106
35	110
36	112
37	116
38	118
39	122
40	124
41	128
42	132
43	134
44	138
45	140
46	144
47	146
48	150
49	154
50	156
51	160
52	162
53	166
54	168
55	172
56	176
57	178
58	182