A319844 - cp's OEIS frontend

A319844 Irregular triangle read by rows in which row n lists the even divisors of n in decreasing order together with the odd divisors of n in increasing order.

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

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

cp's OEIS Frontend

A319844 Irregular triangle read by rows in which row n lists the even divisors of n in decreasing order together with the odd divisors of n in increasing order.

Table of values

List of values

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

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

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