A384380 - cp's OEIS frontend

A384380 Irregular triangle read by rows: T(n,k) is the number of connected subsets of k faces (or polyforms) of the n-th Johnson solid, up to symmetries of that solid; 1 <= n <= 92, 1 <= k <= A242731(n).

n	a(n)
1	2
2	2
3	3
4	2
5	1
6	2
7	2
8	3
9	3
10	2
11	1
12	4
13	4
14	9
15	14
16	14
17	9
18	4
19	1
20	4
21	4
22	12
23	20
24	32
25	30
26	23
27	11
28	4
29	1
30	4
31	4
32	13
33	29
34	54
35	75
36	75
37	55
38	31
39	12
40	4
41	1
42	5
43	5
44	17
45	43
46	118
47	285
48	595
49	992
50	1320
51	1348
52	1045
53	603
54	262
55	86
56	22
57	5
58	1
59	3
60	4
61	6
62	7
63	6
64	3
65	1
66	3
67	4
68	7
69	12
70	17
71	16
72	9
73	3
74	1

[2, 2, 3, 2, 1, 2, 2, 3, 3, 2, 1, 4, 4, 9, 14, 14, 9, 4, 1, 4, 4, 12, 20, 32, 30, 23, 11, 4, 1, 4, 4, 13, 29, 54, 75, 75, 55, 31, 12, 4, 1, 5, 5, 17, 43, 118, 285, 595, 992, 1320, 1348, 1045, 603, 262, 86, 22, 5, 1, 3, 4, 6, 7, 6, 3, 1, 3, 4, 7, 12, 17, 16, 9, 3, 1]

cp's OEIS Frontend

A384380 Irregular triangle read by rows: T(n,k) is the number of connected subsets of k faces (or polyforms) of the n-th Johnson solid, up to symmetries of that solid; 1 <= n <= 92, 1 <= k <= A242731(n).

Table of values

List of values