A342911 - cp's OEIS frontend

A342911 T(n, k) = Sum_{j=1..k} (1 + 2cos(jPi/(k + 1)))^n for n > 0, T(0, 0) = 1. Triangle read by rows, T(n, k) for 0 <= k <= n.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	4
6	0
7	1
8	8
9	15
10	0
11	1
12	16
13	35
14	54
15	0
16	1
17	32
18	83
19	134
20	185
21	0
22	1
23	64
24	199
25	340
26	481
27	622
28	0
29	1
30	128
31	479
32	872
33	1265
34	1658
35	2051
36	0
37	1
38	256
39	1155
40	2254
41	3361
42	4468
43	5575
44	6682
45	0
46	1
47	512
48	2787
49	5854
50	8993
51	12132
52	15271
53	18410
54	21549

[1, 0, 1, 0, 1, 4, 0, 1, 8, 15, 0, 1, 16, 35, 54, 0, 1, 32, 83, 134, 185, 0, 1, 64, 199, 340, 481, 622, 0, 1, 128, 479, 872, 1265, 1658, 2051, 0, 1, 256, 1155, 2254, 3361, 4468, 5575, 6682, 0, 1, 512, 2787, 5854, 8993, 12132, 15271, 18410, 21549]

cp's OEIS Frontend

A342911 T(n, k) = Sum_{j=1..k} (1 + 2cos(jPi/(k + 1)))^n for n > 0, T(0, 0) = 1. Triangle read by rows, T(n, k) for 0 <= k <= n.

Table of values

List of values

cp's OEIS Frontend

A342911 T(n, k) = Sum_{j=1..k} (1 + 2*cos(j*Pi/(k + 1)))^n for n > 0, T(0, 0) = 1. Triangle read by rows, T(n, k) for 0 <= k <= n.

Table of values

List of values

A342911 T(n, k) = Sum_{j=1..k} (1 + 2cos(jPi/(k + 1)))^n for n > 0, T(0, 0) = 1. Triangle read by rows, T(n, k) for 0 <= k <= n.