A108461 - cp's OEIS frontend

A108461 Table read by antidiagonals: T(n,k) = number of factorizations of (n,k) into pairs (i,j) with i,j>=1, not both 1.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	2
8	2
9	2
10	2
11	1
12	4
13	2
14	4
15	1
16	2
17	2
18	4
19	4
20	2
21	2
22	1
23	5
24	2
25	9
26	2
27	5
28	1
29	3
30	2
31	5
32	4
33	4
34	5
35	2
36	3
37	2
38	7
39	2
40	11
41	2
42	11
43	2
44	7
45	2
46	2
47	4
48	7
49	4
50	5
51	5
52	4
53	7
54	4
55	2
56	1
57	5
58	4
59	16
60	2
61	15
62	2
63	16
64	4
65	5
66	1
67	4
68	2
69	5
70	9
71	7
72	5
73	5
74	7
75	9
76	5
77	2
78	4
79	1
80	11
81	2
82	11
83	4
84	21
85	2
86	21
87	4
88	11
89	2
90	11
91	1
92	2
93	2
94	11
95	4
96	5
97	11
98	7

[1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 1, 4, 2, 4, 1, 2, 2, 4, 4, 2, 2, 1, 5, 2, 9, 2, 5, 1, 3, 2, 5, 4, 4, 5, 2, 3, 2, 7, 2, 11, 2, 11, 2, 7, 2, 2, 4, 7, 4, 5, 5, 4, 7, 4, 2, 1, 5, 4, 16, 2, 15, 2, 16, 4, 5, 1, 4, 2, 5, 9, 7, 5, 5, 7, 9, 5, 2, 4, 1, 11, 2, 11, 4, 21, 2, 21, 4, 11, 2, 11, 1, 2, 2, 11, 4, 5, 11, 7]

cp's OEIS Frontend

A108461 Table read by antidiagonals: T(n,k) = number of factorizations of (n,k) into pairs (i,j) with i,j>=1, not both 1.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	2
8	2
9	2
10	2
11	1
12	4
13	2
14	4
15	1
16	2
17	2
18	4
19	4
20	2
21	2
22	1
23	5
24	2
25	9
26	2
27	5
28	1
29	3
30	2
31	5
32	4
33	4
34	5
35	2
36	3
37	2
38	7
39	2
40	11
41	2
42	11
43	2
44	7
45	2
46	2
47	4
48	7
49	4
50	5
51	5
52	4
53	7
54	4
55	2
56	1
57	5
58	4
59	16
60	2
61	15
62	2
63	16
64	4
65	5
66	1
67	4
68	2
69	5
70	9
71	7
72	5
73	5
74	7
75	9
76	5
77	2
78	4
79	1
80	11
81	2
82	11
83	4
84	21
85	2
86	21
87	4
88	11
89	2
90	11
91	1
92	2
93	2
94	11
95	4
96	5
97	11
98	7

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	2
8	2
9	2
10	2
11	1
12	4
13	2
14	4
15	1
16	2
17	2
18	4
19	4
20	2
21	2
22	1
23	5
24	2
25	9
26	2
27	5
28	1
29	3
30	2
31	5
32	4
33	4
34	5
35	2
36	3
37	2
38	7
39	2
40	11
41	2
42	11
43	2
44	7
45	2
46	2
47	4
48	7
49	4
50	5
51	5
52	4
53	7
54	4
55	2
56	1
57	5
58	4
59	16
60	2
61	15
62	2
63	16
64	4
65	5
66	1
67	4
68	2
69	5
70	9
71	7
72	5
73	5
74	7
75	9
76	5
77	2
78	4
79	1
80	11
81	2
82	11
83	4
84	21
85	2
86	21
87	4
88	11
89	2
90	11
91	1
92	2
93	2
94	11
95	4
96	5
97	11
98	7

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	2
8	2
9	2
10	2
11	1
12	4
13	2
14	4
15	1
16	2
17	2
18	4
19	4
20	2
21	2
22	1
23	5
24	2
25	9
26	2
27	5
28	1
29	3
30	2
31	5
32	4
33	4
34	5
35	2
36	3
37	2
38	7
39	2
40	11
41	2
42	11
43	2
44	7
45	2
46	2
47	4
48	7
49	4
50	5
51	5
52	4
53	7
54	4
55	2
56	1
57	5
58	4
59	16
60	2
61	15
62	2
63	16
64	4
65	5
66	1
67	4
68	2
69	5
70	9
71	7
72	5
73	5
74	7
75	9
76	5
77	2
78	4
79	1
80	11
81	2
82	11
83	4
84	21
85	2
86	21
87	4
88	11
89	2
90	11
91	1
92	2
93	2
94	11
95	4
96	5
97	11
98	7