A166494 - cp's OEIS frontend

A166494 Irregular triangle T(n,k) = greatest common divisor of n-th row terms of A143753.

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

[3, 8, 5, 5, 12, 12, 7, 7, 7, 16, 16, 16, 9, 9, 9, 9, 20, 20, 20, 20, 11, 11, 11, 11, 11, 24, 24, 24, 24, 24, 13, 13, 13, 13, 13, 13, 28, 28, 28, 28, 28, 28, 15, 15, 15, 15, 15, 15, 15, 32, 32, 32, 32, 32, 32, 32, 17, 17, 17, 17, 17, 17, 17, 17, 36, 36, 36, 36, 36, 36, 36, 36, 19, 19, 19, 19, 19, 19, 19, 19, 19, 40, 40, 40, 40, 40, 40, 40, 40, 40, 21, 21, 21, 21, 21, 21, 21, 21]

cp's OEIS Frontend

A166494 Irregular triangle T(n,k) = greatest common divisor of n-th row terms of A143753.

Table of values

List of values

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

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

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