A319845 - cp's OEIS frontend

A319845 Irregular triangle read by rows in which row n lists the even divisors of n in increasing order together with the odd divisors of n in decreasing order.

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

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

cp's OEIS Frontend

A319845 Irregular triangle read by rows in which row n lists the even divisors of n in increasing order together with the odd divisors of n in decreasing order.

Table of values

List of values

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

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

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