A366344 - cp's OEIS frontend

A366344 Irregular triangle T(n, k), n >= 0, k = 1 or 2, read by rows; the n-th row contains two coprime positive integers whose prime factorizations are encoded in the ternary expansion of n (see Comments section for precise definition).

n	a(n)
0	1
1	1
2	2
3	1
4	1
5	2
6	3
7	1
8	4
9	1
10	3
11	2
12	1
13	3
14	2
15	3
16	1
17	4
18	5
19	1
20	6
21	1
22	5
23	2
24	9
25	1
26	8
27	1
28	9
29	2
30	5
31	3
32	10
33	3
34	3
35	4
36	1
37	5
38	2
39	5
40	1
41	6
42	3
43	5
44	4
45	3
46	3
47	10
48	1
49	9
50	2
51	9
52	1
53	8
54	7
55	1
56	10
57	1
58	7
59	2
60	15
61	1
62	12
63	1
64	15
65	2
66	7
67	3
68	14
69	3
70	5
71	4
72	25
73	1
74	18
75	1
76	25
77	2
78	27
79	1
80	16
81	1
82	27
83	2

[1, 1, 2, 1, 1, 2, 3, 1, 4, 1, 3, 2, 1, 3, 2, 3, 1, 4, 5, 1, 6, 1, 5, 2, 9, 1, 8, 1, 9, 2, 5, 3, 10, 3, 3, 4, 1, 5, 2, 5, 1, 6, 3, 5, 4, 3, 3, 10, 1, 9, 2, 9, 1, 8, 7, 1, 10, 1, 7, 2, 15, 1, 12, 1, 15, 2, 7, 3, 14, 3, 5, 4, 25, 1, 18, 1, 25, 2, 27, 1, 16, 1, 27, 2]

cp's OEIS Frontend

A366344 Irregular triangle T(n, k), n >= 0, k = 1 or 2, read by rows; the n-th row contains two coprime positive integers whose prime factorizations are encoded in the ternary expansion of n (see Comments section for precise definition).

Table of values

List of values

n	a(n)
0	1
1	1
2	2
3	1
4	1
5	2
6	3
7	1
8	4
9	1
10	3
11	2
12	1
13	3
14	2
15	3
16	1
17	4
18	5
19	1
20	6
21	1
22	5
23	2
24	9
25	1
26	8
27	1
28	9
29	2
30	5
31	3
32	10
33	3
34	3
35	4
36	1
37	5
38	2
39	5
40	1
41	6
42	3
43	5
44	4
45	3
46	3
47	10
48	1
49	9
50	2
51	9
52	1
53	8
54	7
55	1
56	10
57	1
58	7
59	2
60	15
61	1
62	12
63	1
64	15
65	2
66	7
67	3
68	14
69	3
70	5
71	4
72	25
73	1
74	18
75	1
76	25
77	2
78	27
79	1
80	16
81	1
82	27
83	2

n	a(n)
0	1
1	1
2	2
3	1
4	1
5	2
6	3
7	1
8	4
9	1
10	3
11	2
12	1
13	3
14	2
15	3
16	1
17	4
18	5
19	1
20	6
21	1
22	5
23	2
24	9
25	1
26	8
27	1
28	9
29	2
30	5
31	3
32	10
33	3
34	3
35	4
36	1
37	5
38	2
39	5
40	1
41	6
42	3
43	5
44	4
45	3
46	3
47	10
48	1
49	9
50	2
51	9
52	1
53	8
54	7
55	1
56	10
57	1
58	7
59	2
60	15
61	1
62	12
63	1
64	15
65	2
66	7
67	3
68	14
69	3
70	5
71	4
72	25
73	1
74	18
75	1
76	25
77	2
78	27
79	1
80	16
81	1
82	27
83	2

n	a(n)
0	1
1	1
2	2
3	1
4	1
5	2
6	3
7	1
8	4
9	1
10	3
11	2
12	1
13	3
14	2
15	3
16	1
17	4
18	5
19	1
20	6
21	1
22	5
23	2
24	9
25	1
26	8
27	1
28	9
29	2
30	5
31	3
32	10
33	3
34	3
35	4
36	1
37	5
38	2
39	5
40	1
41	6
42	3
43	5
44	4
45	3
46	3
47	10
48	1
49	9
50	2
51	9
52	1
53	8
54	7
55	1
56	10
57	1
58	7
59	2
60	15
61	1
62	12
63	1
64	15
65	2
66	7
67	3
68	14
69	3
70	5
71	4
72	25
73	1
74	18
75	1
76	25
77	2
78	27
79	1
80	16
81	1
82	27
83	2