A321434 - cp's OEIS frontend

A321434 Triangle read by rows; T(n,k) is the number of achiral rows of n colors using exactly k colors.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	0
6	1
7	2
8	0
9	1
10	2
11	0
12	1
13	6
14	6
15	0
16	1
17	6
18	6
19	0
20	1
21	14
22	36
23	24
24	0
25	1
26	14
27	36
28	24
29	0
30	1
31	30
32	150
33	240
34	120
35	0
36	1
37	30
38	150
39	240
40	120
41	0
42	1
43	62
44	540
45	1560
46	1800
47	720
48	0
49	1
50	62
51	540
52	1560
53	1800
54	720
55	0
56	1
57	126
58	1806
59	8400
60	16800
61	15120
62	5040
63	0
64	1
65	126
66	1806
67	8400
68	16800
69	15120
70	5040

[1, 0, 1, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 6, 6, 0, 1, 6, 6, 0, 1, 14, 36, 24, 0, 1, 14, 36, 24, 0, 1, 30, 150, 240, 120, 0, 1, 30, 150, 240, 120, 0, 1, 62, 540, 1560, 1800, 720, 0, 1, 62, 540, 1560, 1800, 720, 0, 1, 126, 1806, 8400, 16800, 15120, 5040, 0, 1, 126, 1806, 8400, 16800, 15120, 5040]

cp's OEIS Frontend

A321434 Triangle read by rows; T(n,k) is the number of achiral rows of n colors using exactly k colors.

Table of values

List of values