A098666 - cp's OEIS frontend

A098666 Triangle read by rows, 1<=k<=n: the n-th row contains the first n numbers after pairwise reducing all common divisors from left to right.

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	1
8	1
9	3
10	2
11	1
12	1
13	3
14	2
15	5
16	1
17	1
18	1
19	1
20	5
21	1
22	1
23	1
24	1
25	1
26	5
27	1
28	7
29	1
30	1
31	1
32	1
33	5
34	1
35	7
36	8
37	1
38	1
39	1
40	1
41	5
42	1
43	7
44	8
45	9
46	1
47	1
48	1
49	1
50	1
51	1
52	7
53	4
54	9
55	1
56	1
57	1
58	1
59	1
60	1
61	1
62	7
63	4
64	9
65	1
66	11
67	1
68	1
69	1
70	1
71	1
72	1
73	7
74	1
75	3
76	1
77	11
78	1
79	1
80	1
81	1
82	1
83	1
84	1
85	7
86	1
87	3
88	1
89	11
90	1
91	13
92	1
93	1
94	1
95	1
96	1
97	1
98	1
99	1
100	3
101	1
102	11
103	1
104	13
105	2

[1, 1, 2, 1, 2, 3, 1, 1, 3, 2, 1, 1, 3, 2, 5, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 5, 1, 7, 1, 1, 1, 1, 5, 1, 7, 8, 1, 1, 1, 1, 5, 1, 7, 8, 9, 1, 1, 1, 1, 1, 1, 7, 4, 9, 1, 1, 1, 1, 1, 1, 1, 7, 4, 9, 1, 11, 1, 1, 1, 1, 1, 1, 7, 1, 3, 1, 11, 1, 1, 1, 1, 1, 1, 1, 7, 1, 3, 1, 11, 1, 13, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 11, 1, 13, 2]

cp's OEIS Frontend

A098666 Triangle read by rows, 1<=k<=n: the n-th row contains the first n numbers after pairwise reducing all common divisors from left to right.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	1
8	1
9	3
10	2
11	1
12	1
13	3
14	2
15	5
16	1
17	1
18	1
19	1
20	5
21	1
22	1
23	1
24	1
25	1
26	5
27	1
28	7
29	1
30	1
31	1
32	1
33	5
34	1
35	7
36	8
37	1
38	1
39	1
40	1
41	5
42	1
43	7
44	8
45	9
46	1
47	1
48	1
49	1
50	1
51	1
52	7
53	4
54	9
55	1
56	1
57	1
58	1
59	1
60	1
61	1
62	7
63	4
64	9
65	1
66	11
67	1
68	1
69	1
70	1
71	1
72	1
73	7
74	1
75	3
76	1
77	11
78	1
79	1
80	1
81	1
82	1
83	1
84	1
85	7
86	1
87	3
88	1
89	11
90	1
91	13
92	1
93	1
94	1
95	1
96	1
97	1
98	1
99	1
100	3
101	1
102	11
103	1
104	13
105	2

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	1
8	1
9	3
10	2
11	1
12	1
13	3
14	2
15	5
16	1
17	1
18	1
19	1
20	5
21	1
22	1
23	1
24	1
25	1
26	5
27	1
28	7
29	1
30	1
31	1
32	1
33	5
34	1
35	7
36	8
37	1
38	1
39	1
40	1
41	5
42	1
43	7
44	8
45	9
46	1
47	1
48	1
49	1
50	1
51	1
52	7
53	4
54	9
55	1
56	1
57	1
58	1
59	1
60	1
61	1
62	7
63	4
64	9
65	1
66	11
67	1
68	1
69	1
70	1
71	1
72	1
73	7
74	1
75	3
76	1
77	11
78	1
79	1
80	1
81	1
82	1
83	1
84	1
85	7
86	1
87	3
88	1
89	11
90	1
91	13
92	1
93	1
94	1
95	1
96	1
97	1
98	1
99	1
100	3
101	1
102	11
103	1
104	13
105	2

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	3
7	1
8	1
9	3
10	2
11	1
12	1
13	3
14	2
15	5
16	1
17	1
18	1
19	1
20	5
21	1
22	1
23	1
24	1
25	1
26	5
27	1
28	7
29	1
30	1
31	1
32	1
33	5
34	1
35	7
36	8
37	1
38	1
39	1
40	1
41	5
42	1
43	7
44	8
45	9
46	1
47	1
48	1
49	1
50	1
51	1
52	7
53	4
54	9
55	1
56	1
57	1
58	1
59	1
60	1
61	1
62	7
63	4
64	9
65	1
66	11
67	1
68	1
69	1
70	1
71	1
72	1
73	7
74	1
75	3
76	1
77	11
78	1
79	1
80	1
81	1
82	1
83	1
84	1
85	7
86	1
87	3
88	1
89	11
90	1
91	13
92	1
93	1
94	1
95	1
96	1
97	1
98	1
99	1
100	3
101	1
102	11
103	1
104	13
105	2