A366626 - cp's OEIS frontend

A366626 Group the natural numbers into blocks of size 2: [1,2], [3,4], ... and then reverse the order of the numbers within each block. Then group and reverse for each block size up to 4.

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

[5, 2, 1, 4, 7, 10, 3, 6, 9, 12, 11, 8, 17, 14, 13, 16, 19, 22, 15, 18, 21, 24, 23, 20, 29, 26, 25, 28, 31, 34, 27, 30, 33, 36, 35, 32, 41, 38, 37, 40, 43, 46, 39, 42, 45, 48, 47, 44, 53, 50, 49, 52, 55, 58, 51, 54, 57, 60, 59, 56, 65, 62, 61, 64, 67, 70, 63, 66, 69, 72, 71]

cp's OEIS Frontend

A366626 Group the natural numbers into blocks of size 2: [1,2], [3,4], ... and then reverse the order of the numbers within each block. Then group and reverse for each block size up to 4.

Table of values

List of values

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

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

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