A340056 - cp's OEIS frontend

A340056 Irregular triangle read by rows T(n,k) in which row n lists n blocks, where the m-th block consists of the divisors of j multiplied by A000041(m-1), where j = n - m + 1 and 1 <= m <= n.

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

[1, 1, 2, 1, 1, 3, 1, 2, 2, 1, 2, 4, 1, 3, 2, 4, 3, 1, 5, 1, 2, 4, 2, 6, 3, 6, 5, 1, 2, 3, 6, 1, 5, 2, 4, 8, 3, 9, 5, 10, 7, 1, 7, 1, 2, 3, 6, 2, 10, 3, 6, 12, 5, 15, 7, 14, 11, 1, 2, 4, 8, 1, 7, 2, 4, 6, 12, 3, 15, 5, 10, 20, 7, 21, 11, 22, 15, 1, 3, 9, 1, 2, 4, 8, 2, 14, 3, 6, 9, 18, 5]

cp's OEIS Frontend

A340056 Irregular triangle read by rows T(n,k) in which row n lists n blocks, where the m-th block consists of the divisors of j multiplied by A000041(m-1), where j = n - m + 1 and 1 <= m <= n.

Table of values

List of values

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

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

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