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.

A107281 a(0) = 1, a(1) = 1, a(2) = 2 and for n >= 1: a(n+1) = SORT[a(n) + a(n-1) + a(n-2)] where SORT places digits in ascending order and deletes 0's.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 7
5 13
6 24
7 44
8 18
9 68
10 13
11 99
12 18
13 13
14 13
15 44
16 7
17 46
18 79
19 123
20 248
21 45
22 146
23 349
24 45
25 45
26 349
27 349
28 347
29 145
30 148
31 46
32 339
33 335
34 27
35 17
36 379
37 234
38 36
39 469
40 379
41 488
42 1336
43 223
44 247
45 168
46 368
47 378
48 149
49 589
50 1116
51 1458
52 1336
53 139
54 2339
55 1348
56 2368
57 556
58 2247

List of values

[1, 1, 2, 4, 7, 13, 24, 44, 18, 68, 13, 99, 18, 13, 13, 44, 7, 46, 79, 123, 248, 45, 146, 349, 45, 45, 349, 349, 347, 145, 148, 46, 339, 335, 27, 17, 379, 234, 36, 469, 379, 488, 1336, 223, 247, 168, 368, 378, 149, 589, 1116, 1458, 1336, 139, 2339, 1348, 2368, 556, 2247]