cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A290725 Numbers with 3k digits for some k such that the first k digits minus the middle k digits equals the last k digits.

Table of values

n a(n)
1 101
2 110
3 202
4 211
5 220
6 303
7 312
8 321
9 330
10 404
11 413
12 422
13 431
14 440
15 505
16 514
17 523
18 532
19 541
20 550
21 606
22 615
23 624
24 633
25 642
26 651
27 660
28 707
29 716
30 725
31 734
32 743
33 752
34 761
35 770
36 808
37 817
38 826
39 835
40 844
41 853
42 862
43 871
44 880
45 909
46 918
47 927
48 936
49 945
50 954
51 963
52 972
53 981
54 990
55 100010
56 100109
57 100208
58 100307

List of values

[101, 110, 202, 211, 220, 303, 312, 321, 330, 404, 413, 422, 431, 440, 505, 514, 523, 532, 541, 550, 606, 615, 624, 633, 642, 651, 660, 707, 716, 725, 734, 743, 752, 761, 770, 808, 817, 826, 835, 844, 853, 862, 871, 880, 909, 918, 927, 936, 945, 954, 963, 972, 981, 990, 100010, 100109, 100208, 100307]