A357880 - cp's OEIS frontend

A357880 a(1) = a(2) = 1; for n > 2, a(n) is the smallest positive number such that a(n) plus the sum of all previous terms appears in the string concatenation of a(1)..a(n-1).

n	a(n)
1	1
2	1
3	9
4	8
5	79
6	21
7	79
8	19
9	574
10	1
11	87
12	40
13	2
14	36
15	30
16	211
17	593
18	83
19	83
20	30
21	128
22	64
23	184
24	501
25	148
26	9
27	280
28	329
29	203
30	5
31	185
32	161
33	3
34	314
35	391
36	119
37	150
38	24
39	556
40	197
41	195
42	64
43	105
44	108
45	8
46	777
47	207
48	16
49	302
50	52
51	147
52	2
53	111
54	298
55	53
56	67
57	66
58	20
59	105
60	99
61	37
62	15
63	85
64	51
65	183
66	39
67	45
68	8
69	14

[1, 1, 9, 8, 79, 21, 79, 19, 574, 1, 87, 40, 2, 36, 30, 211, 593, 83, 83, 30, 128, 64, 184, 501, 148, 9, 280, 329, 203, 5, 185, 161, 3, 314, 391, 119, 150, 24, 556, 197, 195, 64, 105, 108, 8, 777, 207, 16, 302, 52, 147, 2, 111, 298, 53, 67, 66, 20, 105, 99, 37, 15, 85, 51, 183, 39, 45, 8, 14]

cp's OEIS Frontend

A357880 a(1) = a(2) = 1; for n > 2, a(n) is the smallest positive number such that a(n) plus the sum of all previous terms appears in the string concatenation of a(1)..a(n-1).

Table of values

List of values

n	a(n)
1	1
2	1
3	9
4	8
5	79
6	21
7	79
8	19
9	574
10	1
11	87
12	40
13	2
14	36
15	30
16	211
17	593
18	83
19	83
20	30
21	128
22	64
23	184
24	501
25	148
26	9
27	280
28	329
29	203
30	5
31	185
32	161
33	3
34	314
35	391
36	119
37	150
38	24
39	556
40	197
41	195
42	64
43	105
44	108
45	8
46	777
47	207
48	16
49	302
50	52
51	147
52	2
53	111
54	298
55	53
56	67
57	66
58	20
59	105
60	99
61	37
62	15
63	85
64	51
65	183
66	39
67	45
68	8
69	14

n	a(n)
1	1
2	1
3	9
4	8
5	79
6	21
7	79
8	19
9	574
10	1
11	87
12	40
13	2
14	36
15	30
16	211
17	593
18	83
19	83
20	30
21	128
22	64
23	184
24	501
25	148
26	9
27	280
28	329
29	203
30	5
31	185
32	161
33	3
34	314
35	391
36	119
37	150
38	24
39	556
40	197
41	195
42	64
43	105
44	108
45	8
46	777
47	207
48	16
49	302
50	52
51	147
52	2
53	111
54	298
55	53
56	67
57	66
58	20
59	105
60	99
61	37
62	15
63	85
64	51
65	183
66	39
67	45
68	8
69	14

n	a(n)
1	1
2	1
3	9
4	8
5	79
6	21
7	79
8	19
9	574
10	1
11	87
12	40
13	2
14	36
15	30
16	211
17	593
18	83
19	83
20	30
21	128
22	64
23	184
24	501
25	148
26	9
27	280
28	329
29	203
30	5
31	185
32	161
33	3
34	314
35	391
36	119
37	150
38	24
39	556
40	197
41	195
42	64
43	105
44	108
45	8
46	777
47	207
48	16
49	302
50	52
51	147
52	2
53	111
54	298
55	53
56	67
57	66
58	20
59	105
60	99
61	37
62	15
63	85
64	51
65	183
66	39
67	45
68	8
69	14