A048141 - cp's OEIS frontend

A048141 Number of symmetrical planar partitions of n: planar partitions (A000219) that when regarded as 3-D objects have a threefold axis of symmetry that is the intersection of 3 mirror planes, i.e., C3v symmetry.

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	0
7	2
8	1
9	0
10	2
11	1
12	0
13	2
14	1
15	0
16	3
17	2
18	0
19	4
20	4
21	0
22	4
23	5
24	0
25	5
26	7
27	1
28	6
29	9
30	1
31	6
32	11
33	1
34	8
35	15
36	2
37	10
38	20
39	3
40	10
41	25
42	4
43	12
44	33
45	7
46	14
47	40
48	9
49	15
50	48
51	12
52	18
53	60
54	17
55	20
56	74
57	23
58	22
59	89
60	30
61	26
62	108
63	40
64	30
65	130
66	51
67	33
68	157
69	66
70	37
71	187
72	85
73	42
74	222
75	108
76	47
77	262
78	136
79	54

[1, 0, 0, 1, 0, 0, 2, 1, 0, 2, 1, 0, 2, 1, 0, 3, 2, 0, 4, 4, 0, 4, 5, 0, 5, 7, 1, 6, 9, 1, 6, 11, 1, 8, 15, 2, 10, 20, 3, 10, 25, 4, 12, 33, 7, 14, 40, 9, 15, 48, 12, 18, 60, 17, 20, 74, 23, 22, 89, 30, 26, 108, 40, 30, 130, 51, 33, 157, 66, 37, 187, 85, 42, 222, 108, 47, 262, 136, 54]

cp's OEIS Frontend

A048141 Number of symmetrical planar partitions of n: planar partitions (A000219) that when regarded as 3-D objects have a threefold axis of symmetry that is the intersection of 3 mirror planes, i.e., C3v symmetry.

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	0
7	2
8	1
9	0
10	2
11	1
12	0
13	2
14	1
15	0
16	3
17	2
18	0
19	4
20	4
21	0
22	4
23	5
24	0
25	5
26	7
27	1
28	6
29	9
30	1
31	6
32	11
33	1
34	8
35	15
36	2
37	10
38	20
39	3
40	10
41	25
42	4
43	12
44	33
45	7
46	14
47	40
48	9
49	15
50	48
51	12
52	18
53	60
54	17
55	20
56	74
57	23
58	22
59	89
60	30
61	26
62	108
63	40
64	30
65	130
66	51
67	33
68	157
69	66
70	37
71	187
72	85
73	42
74	222
75	108
76	47
77	262
78	136
79	54

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	0
7	2
8	1
9	0
10	2
11	1
12	0
13	2
14	1
15	0
16	3
17	2
18	0
19	4
20	4
21	0
22	4
23	5
24	0
25	5
26	7
27	1
28	6
29	9
30	1
31	6
32	11
33	1
34	8
35	15
36	2
37	10
38	20
39	3
40	10
41	25
42	4
43	12
44	33
45	7
46	14
47	40
48	9
49	15
50	48
51	12
52	18
53	60
54	17
55	20
56	74
57	23
58	22
59	89
60	30
61	26
62	108
63	40
64	30
65	130
66	51
67	33
68	157
69	66
70	37
71	187
72	85
73	42
74	222
75	108
76	47
77	262
78	136
79	54

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	0
7	2
8	1
9	0
10	2
11	1
12	0
13	2
14	1
15	0
16	3
17	2
18	0
19	4
20	4
21	0
22	4
23	5
24	0
25	5
26	7
27	1
28	6
29	9
30	1
31	6
32	11
33	1
34	8
35	15
36	2
37	10
38	20
39	3
40	10
41	25
42	4
43	12
44	33
45	7
46	14
47	40
48	9
49	15
50	48
51	12
52	18
53	60
54	17
55	20
56	74
57	23
58	22
59	89
60	30
61	26
62	108
63	40
64	30
65	130
66	51
67	33
68	157
69	66
70	37
71	187
72	85
73	42
74	222
75	108
76	47
77	262
78	136
79	54