A023801 - OEIS

A023801 as a simple table

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	8
9	9
10	10
11	11
12	12
13	13
14	15
15	16
16	17
17	18
18	19
19	20
20	22
21	23
22	24
23	25
24	26
25	27
26	29
27	30
28	31
29	32
30	33
31	34
32	38
33	39
34	40
35	41
36	48
37	51
38	52
39	53
40	54
41	56
42	58
43	59
44	60
45	62
46	63
47	65
48	66
49	68
50	69
51	70
52	73
53	75
54	76
55	77
56	78
57	81
58	82
59	83
60	90
61	91
62	94
63	95
64	96
65	97
66	99
67	101
68	102

[0,1,2,3,4,5,6,8,9,10,11,12,13,15,16,17,18,19,20, 22,23,24,25,26,27,29,30,31,32,33,34,38,39,40,41, 48,51,52,53,54,56,58,59,60,62,63,65,66,68,69,70, 73,75,76,77,78,81,82,83,90,91,94,95,96,97,99,101, 102]

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	8
9	9
10	10
11	11
12	12
13	13
14	15
15	16
16	17
17	18
18	19
19	20
20	22
21	23
22	24
23	25
24	26
25	27
26	29
27	30
28	31
29	32
30	33
31	34
32	38
33	39
34	40
35	41
36	48
37	51
38	52
39	53
40	54
41	56
42	58
43	59
44	60
45	62
46	63
47	65
48	66
49	68
50	69
51	70
52	73
53	75
54	76
55	77
56	78
57	81
58	82
59	83
60	90
61	91
62	94
63	95
64	96
65	97
66	99
67	101
68	102

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	8
9	9
10	10
11	11
12	12
13	13
14	15
15	16
16	17
17	18
18	19
19	20
20	22
21	23
22	24
23	25
24	26
25	27
26	29
27	30
28	31
29	32
30	33
31	34
32	38
33	39
34	40
35	41
36	48
37	51
38	52
39	53
40	54
41	56
42	58
43	59
44	60
45	62
46	63
47	65
48	66
49	68
50	69
51	70
52	73
53	75
54	76
55	77
56	78
57	81
58	82
59	83
60	90
61	91
62	94
63	95
64	96
65	97
66	99
67	101
68	102

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	8
9	9
10	10
11	11
12	12
13	13
14	15
15	16
16	17
17	18
18	19
19	20
20	22
21	23
22	24
23	25
24	26
25	27
26	29
27	30
28	31
29	32
30	33
31	34
32	38
33	39
34	40
35	41
36	48
37	51
38	52
39	53
40	54
41	56
42	58
43	59
44	60
45	62
46	63
47	65
48	66
49	68
50	69
51	70
52	73
53	75
54	76
55	77
56	78
57	81
58	82
59	83
60	90
61	91
62	94
63	95
64	96
65	97
66	99
67	101
68	102