A366541 - cp's OEIS frontend

A366541 Regular triangle read by rows: T(n,k) is the number of k-facets of the bipyramid on an n-simplex base.

n	a(n)
0	2
1	4
2	4
3	5
4	9
5	6
6	6
7	14
8	16
9	8
10	7
11	20
12	30
13	25
14	10
15	8
16	27
17	50
18	55
19	36
20	12
21	9
22	35
23	77
24	105
25	91
26	49
27	14
28	10
29	44
30	112
31	182
32	196
33	140
34	64
35	16
36	11
37	54
38	156
39	294
40	378
41	336
42	204
43	81
44	18
45	12
46	65
47	210
48	450
49	672
50	714
51	540
52	285
53	100
54	20
55	13
56	77
57	275
58	660
59	1122
60	1386
61	1254
62	825
63	385
64	121
65	22

[2, 4, 4, 5, 9, 6, 6, 14, 16, 8, 7, 20, 30, 25, 10, 8, 27, 50, 55, 36, 12, 9, 35, 77, 105, 91, 49, 14, 10, 44, 112, 182, 196, 140, 64, 16, 11, 54, 156, 294, 378, 336, 204, 81, 18, 12, 65, 210, 450, 672, 714, 540, 285, 100, 20, 13, 77, 275, 660, 1122, 1386, 1254, 825, 385, 121, 22]

cp's OEIS Frontend

A366541 Regular triangle read by rows: T(n,k) is the number of k-facets of the bipyramid on an n-simplex base.

Table of values

List of values