A357432 - cp's OEIS frontend

A357432 a(1) = 1; a(2) = 2; for n > 2, a(n) is the smallest positive number not occurring earlier 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	2
3	9
4	17
5	62
6	38
7	47
8	115
9	93
10	87
11	122
12	30
13	88
14	51
15	85
16	4
17	3
18	31
19	32
20	21
21	221
22	64
23	68
24	302
25	53
26	116
27	92
28	268
29	42
30	48
31	18
32	78
33	76
34	97
35	50
36	153
37	233
38	108
39	63
40	20
41	8
42	16
43	89
44	12
45	77
46	537
47	24
48	377
49	83
50	46
51	306
52	28
53	107
54	197
55	170
56	126
57	61
58	566
59	218
60	82
61	43
62	25
63	14
64	148
65	147
66	6
67	209
68	145
69	37
70	103

[1, 2, 9, 17, 62, 38, 47, 115, 93, 87, 122, 30, 88, 51, 85, 4, 3, 31, 32, 21, 221, 64, 68, 302, 53, 116, 92, 268, 42, 48, 18, 78, 76, 97, 50, 153, 233, 108, 63, 20, 8, 16, 89, 12, 77, 537, 24, 377, 83, 46, 306, 28, 107, 197, 170, 126, 61, 566, 218, 82, 43, 25, 14, 148, 147, 6, 209, 145, 37, 103]

cp's OEIS Frontend

A357432 a(1) = 1; a(2) = 2; for n > 2, a(n) is the smallest positive number not occurring earlier 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	2
3	9
4	17
5	62
6	38
7	47
8	115
9	93
10	87
11	122
12	30
13	88
14	51
15	85
16	4
17	3
18	31
19	32
20	21
21	221
22	64
23	68
24	302
25	53
26	116
27	92
28	268
29	42
30	48
31	18
32	78
33	76
34	97
35	50
36	153
37	233
38	108
39	63
40	20
41	8
42	16
43	89
44	12
45	77
46	537
47	24
48	377
49	83
50	46
51	306
52	28
53	107
54	197
55	170
56	126
57	61
58	566
59	218
60	82
61	43
62	25
63	14
64	148
65	147
66	6
67	209
68	145
69	37
70	103

n	a(n)
1	1
2	2
3	9
4	17
5	62
6	38
7	47
8	115
9	93
10	87
11	122
12	30
13	88
14	51
15	85
16	4
17	3
18	31
19	32
20	21
21	221
22	64
23	68
24	302
25	53
26	116
27	92
28	268
29	42
30	48
31	18
32	78
33	76
34	97
35	50
36	153
37	233
38	108
39	63
40	20
41	8
42	16
43	89
44	12
45	77
46	537
47	24
48	377
49	83
50	46
51	306
52	28
53	107
54	197
55	170
56	126
57	61
58	566
59	218
60	82
61	43
62	25
63	14
64	148
65	147
66	6
67	209
68	145
69	37
70	103

n	a(n)
1	1
2	2
3	9
4	17
5	62
6	38
7	47
8	115
9	93
10	87
11	122
12	30
13	88
14	51
15	85
16	4
17	3
18	31
19	32
20	21
21	221
22	64
23	68
24	302
25	53
26	116
27	92
28	268
29	42
30	48
31	18
32	78
33	76
34	97
35	50
36	153
37	233
38	108
39	63
40	20
41	8
42	16
43	89
44	12
45	77
46	537
47	24
48	377
49	83
50	46
51	306
52	28
53	107
54	197
55	170
56	126
57	61
58	566
59	218
60	82
61	43
62	25
63	14
64	148
65	147
66	6
67	209
68	145
69	37
70	103