A376856 - cp's OEIS frontend

A376856 a(1) = 1; for n > 1, a(n) is the smallest unused positive number such that a(n), |a(n) - a(n-1)| and a(1) + ... +a(n) are all palindromes.

n	a(n)
1	1
2	2
3	3
4	5
5	11
6	22
7	33
8	44
9	121
10	222
11	101
12	202
13	454
14	1221
15	2222
16	1001
17	2002
18	4554
19	12221
20	22222
21	10001
22	20002
23	45554
24	122221
25	222222
26	100001
27	200002
28	455554
29	1222221
30	2222222
31	1000001
32	2000002
33	4555554
34	12222221
35	22222222
36	10000001
37	20000002
38	45555554
39	122222221
40	222222222
41	100000001
42	200000002
43	455555554
44	1222222221
45	2222222222
46	1000000001

[1, 2, 3, 5, 11, 22, 33, 44, 121, 222, 101, 202, 454, 1221, 2222, 1001, 2002, 4554, 12221, 22222, 10001, 20002, 45554, 122221, 222222, 100001, 200002, 455554, 1222221, 2222222, 1000001, 2000002, 4555554, 12222221, 22222222, 10000001, 20000002, 45555554, 122222221, 222222222, 100000001, 200000002, 455555554, 1222222221, 2222222222, 1000000001]

cp's OEIS Frontend

A376856 a(1) = 1; for n > 1, a(n) is the smallest unused positive number such that a(n), |a(n) - a(n-1)| and a(1) + ... +a(n) are all palindromes.

Table of values

List of values