A144688 - cp's OEIS frontend

A144688 "Magic" numbers: all numbers from 0 to 9 are magic; a number >= 10 is magic if it is divisible by the number of its digits and the number obtained by deleting the final digit is also magic.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	16
15	18
16	20
17	22
18	24
19	26
20	28
21	30
22	32
23	34
24	36
25	38
26	40
27	42
28	44
29	46
30	48
31	50
32	52
33	54
34	56
35	58
36	60
37	62
38	64
39	66
40	68
41	70
42	72
43	74
44	76
45	78
46	80
47	82
48	84
49	86
50	88
51	90
52	92
53	94
54	96
55	98
56	102
57	105
58	108
59	120
60	123
61	126
62	129
63	141
64	144
65	147
66	162
67	165
68	168
69	180

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 102, 105, 108, 120, 123, 126, 129, 141, 144, 147, 162, 165, 168, 180]

cp's OEIS Frontend

A144688 "Magic" numbers: all numbers from 0 to 9 are magic; a number >= 10 is magic if it is divisible by the number of its digits and the number obtained by deleting the final digit is also magic.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	16
15	18
16	20
17	22
18	24
19	26
20	28
21	30
22	32
23	34
24	36
25	38
26	40
27	42
28	44
29	46
30	48
31	50
32	52
33	54
34	56
35	58
36	60
37	62
38	64
39	66
40	68
41	70
42	72
43	74
44	76
45	78
46	80
47	82
48	84
49	86
50	88
51	90
52	92
53	94
54	96
55	98
56	102
57	105
58	108
59	120
60	123
61	126
62	129
63	141
64	144
65	147
66	162
67	165
68	168
69	180

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	16
15	18
16	20
17	22
18	24
19	26
20	28
21	30
22	32
23	34
24	36
25	38
26	40
27	42
28	44
29	46
30	48
31	50
32	52
33	54
34	56
35	58
36	60
37	62
38	64
39	66
40	68
41	70
42	72
43	74
44	76
45	78
46	80
47	82
48	84
49	86
50	88
51	90
52	92
53	94
54	96
55	98
56	102
57	105
58	108
59	120
60	123
61	126
62	129
63	141
64	144
65	147
66	162
67	165
68	168
69	180

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	16
15	18
16	20
17	22
18	24
19	26
20	28
21	30
22	32
23	34
24	36
25	38
26	40
27	42
28	44
29	46
30	48
31	50
32	52
33	54
34	56
35	58
36	60
37	62
38	64
39	66
40	68
41	70
42	72
43	74
44	76
45	78
46	80
47	82
48	84
49	86
50	88
51	90
52	92
53	94
54	96
55	98
56	102
57	105
58	108
59	120
60	123
61	126
62	129
63	141
64	144
65	147
66	162
67	165
68	168
69	180