A375757 - OEIS

A375757 as a simple table

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

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

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

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

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