A073894 - cp's OEIS frontend

A073894 a(0)=1; a(n) for n > 0 is the smallest number not used earlier such that the concatenation of a(0),...,a(n) is a multiple of n+1.

n	a(n)
0	1
1	0
2	2
3	4
4	5
5	6
6	9
7	12
8	15
9	10
10	11
11	24
12	25
13	8
14	30
15	40
16	41
17	18
18	28
19	20
20	27
21	46
22	31
23	52
24	50
25	32
26	38
27	60
28	61
29	80
30	55
31	36
32	44
33	120
34	45
35	48
36	78
37	26
38	64
39	160
40	93
41	14
42	23
43	140
44	95
45	98
46	21
47	76
48	51
49	100
50	56
51	92
52	84
53	34
54	85
55	68
56	3
57	62
58	115
59	180
60	81
61	74
62	88
63	128
64	75
65	58
66	72
67	124
68	134

[1, 0, 2, 4, 5, 6, 9, 12, 15, 10, 11, 24, 25, 8, 30, 40, 41, 18, 28, 20, 27, 46, 31, 52, 50, 32, 38, 60, 61, 80, 55, 36, 44, 120, 45, 48, 78, 26, 64, 160, 93, 14, 23, 140, 95, 98, 21, 76, 51, 100, 56, 92, 84, 34, 85, 68, 3, 62, 115, 180, 81, 74, 88, 128, 75, 58, 72, 124, 134]

cp's OEIS Frontend

A073894 a(0)=1; a(n) for n > 0 is the smallest number not used earlier such that the concatenation of a(0),...,a(n) is a multiple of n+1.

Table of values

List of values

n	a(n)
0	1
1	0
2	2
3	4
4	5
5	6
6	9
7	12
8	15
9	10
10	11
11	24
12	25
13	8
14	30
15	40
16	41
17	18
18	28
19	20
20	27
21	46
22	31
23	52
24	50
25	32
26	38
27	60
28	61
29	80
30	55
31	36
32	44
33	120
34	45
35	48
36	78
37	26
38	64
39	160
40	93
41	14
42	23
43	140
44	95
45	98
46	21
47	76
48	51
49	100
50	56
51	92
52	84
53	34
54	85
55	68
56	3
57	62
58	115
59	180
60	81
61	74
62	88
63	128
64	75
65	58
66	72
67	124
68	134

n	a(n)
0	1
1	0
2	2
3	4
4	5
5	6
6	9
7	12
8	15
9	10
10	11
11	24
12	25
13	8
14	30
15	40
16	41
17	18
18	28
19	20
20	27
21	46
22	31
23	52
24	50
25	32
26	38
27	60
28	61
29	80
30	55
31	36
32	44
33	120
34	45
35	48
36	78
37	26
38	64
39	160
40	93
41	14
42	23
43	140
44	95
45	98
46	21
47	76
48	51
49	100
50	56
51	92
52	84
53	34
54	85
55	68
56	3
57	62
58	115
59	180
60	81
61	74
62	88
63	128
64	75
65	58
66	72
67	124
68	134

n	a(n)
0	1
1	0
2	2
3	4
4	5
5	6
6	9
7	12
8	15
9	10
10	11
11	24
12	25
13	8
14	30
15	40
16	41
17	18
18	28
19	20
20	27
21	46
22	31
23	52
24	50
25	32
26	38
27	60
28	61
29	80
30	55
31	36
32	44
33	120
34	45
35	48
36	78
37	26
38	64
39	160
40	93
41	14
42	23
43	140
44	95
45	98
46	21
47	76
48	51
49	100
50	56
51	92
52	84
53	34
54	85
55	68
56	3
57	62
58	115
59	180
60	81
61	74
62	88
63	128
64	75
65	58
66	72
67	124
68	134