A337209 - cp's OEIS frontend

A337209 Triangle read by rows T(n,k), (n >= 1, k > = 1), in which row n has length A000070(n-1) and every column gives A000203, the sum of divisors function.

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

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

cp's OEIS Frontend

A337209 Triangle read by rows T(n,k), (n >= 1, k > = 1), in which row n has length A000070(n-1) and every column gives A000203, the sum of divisors function.

Table of values

List of values

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

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

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