A320659 - cp's OEIS frontend

A320659 Number of factorizations of A181821(n) into squarefree semiprimes. Number of multiset partitions, of a multiset whose multiplicities are the prime indices of n, into strict pairs.

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	0
14	0
15	0
16	3
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	1
26	0
27	1
28	0
29	0
30	1
31	0
32	0
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	1
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	6
49	1
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	1
64	15
65	0
66	0
67	0
68	0
69	0
70	1
71	0
72	0
73	0
74	0
75	1
76	0
77	0
78	0
79	0
80	0
81	6
82	0
83	0
84	1
85	0
86	0
87	0

[1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 3, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 6, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 15, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 6, 0, 0, 1, 0, 0, 0]

cp's OEIS Frontend

A320659 Number of factorizations of A181821(n) into squarefree semiprimes. Number of multiset partitions, of a multiset whose multiplicities are the prime indices of n, into strict pairs.

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	0
14	0
15	0
16	3
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	1
26	0
27	1
28	0
29	0
30	1
31	0
32	0
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	1
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	6
49	1
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	1
64	15
65	0
66	0
67	0
68	0
69	0
70	1
71	0
72	0
73	0
74	0
75	1
76	0
77	0
78	0
79	0
80	0
81	6
82	0
83	0
84	1
85	0
86	0
87	0

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	0
14	0
15	0
16	3
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	1
26	0
27	1
28	0
29	0
30	1
31	0
32	0
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	1
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	6
49	1
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	1
64	15
65	0
66	0
67	0
68	0
69	0
70	1
71	0
72	0
73	0
74	0
75	1
76	0
77	0
78	0
79	0
80	0
81	6
82	0
83	0
84	1
85	0
86	0
87	0

n	a(n)
1	1
2	0
3	0
4	1
5	0
6	0
7	0
8	0
9	1
10	0
11	0
12	1
13	0
14	0
15	0
16	3
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	1
26	0
27	1
28	0
29	0
30	1
31	0
32	0
33	0
34	0
35	0
36	3
37	0
38	0
39	0
40	1
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	6
49	1
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	1
64	15
65	0
66	0
67	0
68	0
69	0
70	1
71	0
72	0
73	0
74	0
75	1
76	0
77	0
78	0
79	0
80	0
81	6
82	0
83	0
84	1
85	0
86	0
87	0