A330935 - cp's OEIS frontend

A330935 Irregular triangle read by rows where T(n,k) is the number of length-k chains from minimum to maximum in the poset of factorizations of n into factors > 1, ordered by refinement.

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

[1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 0, 1, 0, 1, 3, 2, 1, 0, 1, 2, 1, 0, 1, 2, 0, 1, 0, 1, 1, 0, 1, 5, 5, 0, 1, 0, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 3, 1, 0, 1, 5, 8, 4, 0, 1, 0, 1, 0, 1, 0, 1, 7, 7, 1, 0, 1, 0, 1, 0, 1, 5, 5, 1, 0, 1]

cp's OEIS Frontend

A330935 Irregular triangle read by rows where T(n,k) is the number of length-k chains from minimum to maximum in the poset of factorizations of n into factors > 1, ordered by refinement.

Table of values

List of values

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

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

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