A347026 - cp's OEIS frontend

A347026 Irregular triangle read by rows in which row n lists the first n odd numbers, followed by the first n odd numbers in decreasing order.

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

[1, 1, 1, 3, 3, 1, 1, 3, 5, 5, 3, 1, 1, 3, 5, 7, 7, 5, 3, 1, 1, 3, 5, 7, 9, 9, 7, 5, 3, 1, 1, 3, 5, 7, 9, 11, 11, 9, 7, 5, 3, 1, 1, 3, 5, 7, 9, 11, 13, 13, 11, 9, 7, 5, 3, 1, 1, 3, 5, 7, 9, 11, 13, 15, 15, 13, 11, 9, 7, 5, 3, 1, 1, 3, 5, 7, 9, 11, 13, 15, 17, 17, 15, 13, 11, 9, 7, 5, 3, 1]

cp's OEIS Frontend

A347026 Irregular triangle read by rows in which row n lists the first n odd numbers, followed by the first n odd numbers in decreasing order.

Table of values

List of values

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

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

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