A377137 - cp's OEIS frontend

A377137 Array read by rows (blocks). Each row is a permutation of a block of consecutive numbers; the blocks are disjoint and every positive number belongs to some block. Row n contains 3n/2 elements if n is even, and (n+1)/2 elements if n is odd; ; see Comments.

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

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

cp's OEIS Frontend

A377137 Array read by rows (blocks). Each row is a permutation of a block of consecutive numbers; the blocks are disjoint and every positive number belongs to some block. Row n contains 3n/2 elements if n is even, and (n+1)/2 elements if n is odd; ; see Comments.

Table of values

List of values

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

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

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