A209235 - cp's OEIS frontend

A209235 Rectangular array read by antidiagonals, with entry k in row n given by T(n,k) = 2^{k-1}Sum_{j=1..n} (cos((2j-1)Pi/(2n+1)))^{k-1}.

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	1
7	4
8	1
9	3
10	1
11	5
12	1
13	5
14	4
15	1
16	6
17	1
18	7
19	4
20	7
21	1
22	8
23	1
24	11
25	4
26	19
27	16
28	18
29	1
30	9
31	1
32	13
33	4
34	25
35	16
36	38
37	29
38	1
39	10
40	1
41	15
42	4
43	31
44	16
45	58
46	57
47	47
48	1
49	11
50	1
51	17
52	4
53	37
54	16
55	78
56	64
57	117
58	76
59	1
60	12
61	1
62	19
63	4
64	43
65	16
66	98
67	64
68	187
69	193
70	123
71	1

[1, 2, 1, 3, 1, 1, 4, 1, 3, 1, 5, 1, 5, 4, 1, 6, 1, 7, 4, 7, 1, 8, 1, 11, 4, 19, 16, 18, 1, 9, 1, 13, 4, 25, 16, 38, 29, 1, 10, 1, 15, 4, 31, 16, 58, 57, 47, 1, 11, 1, 17, 4, 37, 16, 78, 64, 117, 76, 1, 12, 1, 19, 4, 43, 16, 98, 64, 187, 193, 123, 1]

cp's OEIS Frontend

A209235 Rectangular array read by antidiagonals, with entry k in row n given by T(n,k) = 2^{k-1}Sum_{j=1..n} (cos((2j-1)Pi/(2n+1)))^{k-1}.

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	1
7	4
8	1
9	3
10	1
11	5
12	1
13	5
14	4
15	1
16	6
17	1
18	7
19	4
20	7
21	1
22	8
23	1
24	11
25	4
26	19
27	16
28	18
29	1
30	9
31	1
32	13
33	4
34	25
35	16
36	38
37	29
38	1
39	10
40	1
41	15
42	4
43	31
44	16
45	58
46	57
47	47
48	1
49	11
50	1
51	17
52	4
53	37
54	16
55	78
56	64
57	117
58	76
59	1
60	12
61	1
62	19
63	4
64	43
65	16
66	98
67	64
68	187
69	193
70	123
71	1

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	1
7	4
8	1
9	3
10	1
11	5
12	1
13	5
14	4
15	1
16	6
17	1
18	7
19	4
20	7
21	1
22	8
23	1
24	11
25	4
26	19
27	16
28	18
29	1
30	9
31	1
32	13
33	4
34	25
35	16
36	38
37	29
38	1
39	10
40	1
41	15
42	4
43	31
44	16
45	58
46	57
47	47
48	1
49	11
50	1
51	17
52	4
53	37
54	16
55	78
56	64
57	117
58	76
59	1
60	12
61	1
62	19
63	4
64	43
65	16
66	98
67	64
68	187
69	193
70	123
71	1

cp's OEIS Frontend

A209235 Rectangular array read by antidiagonals, with entry k in row n given by T(n,k) = 2^{k-1}*Sum_{j=1..n} (cos((2*j-1)*Pi/(2*n+1)))^{k-1}.

Table of values

List of values

A209235 Rectangular array read by antidiagonals, with entry k in row n given by T(n,k) = 2^{k-1}Sum_{j=1..n} (cos((2j-1)Pi/(2n+1)))^{k-1}.

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	1
7	4
8	1
9	3
10	1
11	5
12	1
13	5
14	4
15	1
16	6
17	1
18	7
19	4
20	7
21	1
22	8
23	1
24	11
25	4
26	19
27	16
28	18
29	1
30	9
31	1
32	13
33	4
34	25
35	16
36	38
37	29
38	1
39	10
40	1
41	15
42	4
43	31
44	16
45	58
46	57
47	47
48	1
49	11
50	1
51	17
52	4
53	37
54	16
55	78
56	64
57	117
58	76
59	1
60	12
61	1
62	19
63	4
64	43
65	16
66	98
67	64
68	187
69	193
70	123
71	1