A339278 - cp's OEIS frontend

A339278 Irregular triangle read by rows T(n,k), (n >= 1, k >= 1), in which the partition number A000041(n-1) is the length of row n and every column k is A000203, the sum of divisors function.

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

[1, 3, 4, 1, 7, 3, 1, 6, 4, 3, 1, 1, 12, 7, 4, 3, 3, 1, 1, 8, 6, 7, 4, 4, 3, 3, 1, 1, 1, 1, 15, 12, 6, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 13, 8, 12, 6, 6, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 18, 15, 8, 12, 12, 6, 6, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1]

cp's OEIS Frontend

A339278 Irregular triangle read by rows T(n,k), (n >= 1, k >= 1), in which the partition number A000041(n-1) is the length of row n and every column k is A000203, the sum of divisors function.

Table of values

List of values

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

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

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