A004741 - cp's OEIS frontend

A004741 Concatenation of sequences (1,3,..,2n-1,2n,2n-2,..,2) for n >= 1.

n	a(n)
1	1
2	2
3	1
4	3
5	4
6	2
7	1
8	3
9	5
10	6
11	4
12	2
13	1
14	3
15	5
16	7
17	8
18	6
19	4
20	2
21	1
22	3
23	5
24	7
25	9
26	10
27	8
28	6
29	4
30	2
31	1
32	3
33	5
34	7
35	9
36	11
37	12
38	10
39	8
40	6
41	4
42	2
43	1
44	3
45	5
46	7
47	9
48	11
49	13
50	14
51	12
52	10
53	8
54	6
55	4
56	2
57	1
58	3
59	5
60	7
61	9
62	11
63	13
64	15
65	16
66	14
67	12
68	10
69	8
70	6
71	4
72	2
73	1
74	3
75	5
76	7
77	9
78	11
79	13
80	15
81	17
82	18
83	16
84	14
85	12
86	10
87	8
88	6
89	4
90	2
91	1
92	3
93	5
94	7
95	9
96	11
97	13
98	15
99	17
100	19

[1, 2, 1, 3, 4, 2, 1, 3, 5, 6, 4, 2, 1, 3, 5, 7, 8, 6, 4, 2, 1, 3, 5, 7, 9, 10, 8, 6, 4, 2, 1, 3, 5, 7, 9, 11, 12, 10, 8, 6, 4, 2, 1, 3, 5, 7, 9, 11, 13, 14, 12, 10, 8, 6, 4, 2, 1, 3, 5, 7, 9, 11, 13, 15, 16, 14, 12, 10, 8, 6, 4, 2, 1, 3, 5, 7, 9, 11, 13, 15, 17, 18, 16, 14, 12, 10, 8, 6, 4, 2, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19]

cp's OEIS Frontend

A004741 Concatenation of sequences (1,3,..,2n-1,2n,2n-2,..,2) for n >= 1.

Table of values

List of values

n	a(n)
1	1
2	2
3	1
4	3
5	4
6	2
7	1
8	3
9	5
10	6
11	4
12	2
13	1
14	3
15	5
16	7
17	8
18	6
19	4
20	2
21	1
22	3
23	5
24	7
25	9
26	10
27	8
28	6
29	4
30	2
31	1
32	3
33	5
34	7
35	9
36	11
37	12
38	10
39	8
40	6
41	4
42	2
43	1
44	3
45	5
46	7
47	9
48	11
49	13
50	14
51	12
52	10
53	8
54	6
55	4
56	2
57	1
58	3
59	5
60	7
61	9
62	11
63	13
64	15
65	16
66	14
67	12
68	10
69	8
70	6
71	4
72	2
73	1
74	3
75	5
76	7
77	9
78	11
79	13
80	15
81	17
82	18
83	16
84	14
85	12
86	10
87	8
88	6
89	4
90	2
91	1
92	3
93	5
94	7
95	9
96	11
97	13
98	15
99	17
100	19

n	a(n)
1	1
2	2
3	1
4	3
5	4
6	2
7	1
8	3
9	5
10	6
11	4
12	2
13	1
14	3
15	5
16	7
17	8
18	6
19	4
20	2
21	1
22	3
23	5
24	7
25	9
26	10
27	8
28	6
29	4
30	2
31	1
32	3
33	5
34	7
35	9
36	11
37	12
38	10
39	8
40	6
41	4
42	2
43	1
44	3
45	5
46	7
47	9
48	11
49	13
50	14
51	12
52	10
53	8
54	6
55	4
56	2
57	1
58	3
59	5
60	7
61	9
62	11
63	13
64	15
65	16
66	14
67	12
68	10
69	8
70	6
71	4
72	2
73	1
74	3
75	5
76	7
77	9
78	11
79	13
80	15
81	17
82	18
83	16
84	14
85	12
86	10
87	8
88	6
89	4
90	2
91	1
92	3
93	5
94	7
95	9
96	11
97	13
98	15
99	17
100	19

n	a(n)
1	1
2	2
3	1
4	3
5	4
6	2
7	1
8	3
9	5
10	6
11	4
12	2
13	1
14	3
15	5
16	7
17	8
18	6
19	4
20	2
21	1
22	3
23	5
24	7
25	9
26	10
27	8
28	6
29	4
30	2
31	1
32	3
33	5
34	7
35	9
36	11
37	12
38	10
39	8
40	6
41	4
42	2
43	1
44	3
45	5
46	7
47	9
48	11
49	13
50	14
51	12
52	10
53	8
54	6
55	4
56	2
57	1
58	3
59	5
60	7
61	9
62	11
63	13
64	15
65	16
66	14
67	12
68	10
69	8
70	6
71	4
72	2
73	1
74	3
75	5
76	7
77	9
78	11
79	13
80	15
81	17
82	18
83	16
84	14
85	12
86	10
87	8
88	6
89	4
90	2
91	1
92	3
93	5
94	7
95	9
96	11
97	13
98	15
99	17
100	19