A299483 - cp's OEIS frontend

A299483 Irregular triangle read by rows in which row n lists the odd divisors of n in increasing order together with the even divisors of n in decreasing order.

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

[1, 1, 2, 1, 3, 1, 4, 2, 1, 5, 1, 3, 6, 2, 1, 7, 1, 8, 4, 2, 1, 3, 9, 1, 5, 10, 2, 1, 11, 1, 3, 12, 6, 4, 2, 1, 13, 1, 7, 14, 2, 1, 3, 5, 15, 1, 16, 8, 4, 2, 1, 17, 1, 3, 9, 18, 6, 2, 1, 19, 1, 5, 20, 10, 4, 2, 1, 3, 7, 21, 1, 11, 22, 2, 1, 23, 1, 3, 24, 12, 8, 6, 4, 2, 1, 5, 25, 1, 13, 26, 2, 1, 3, 9, 27]

cp's OEIS Frontend

A299483 Irregular triangle read by rows in which row n lists the odd divisors of n in increasing order together with the even divisors of n in decreasing order.

Table of values

List of values

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

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

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