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.

A113168 a(n) is the sum of digits of the first n palindromes.

Table of values

n a(n)
1 0
2 1
3 3
4 6
5 10
6 15
7 21
8 28
9 36
10 45
11 47
12 51
13 57
14 65
15 75
16 87
17 101
18 117
19 135
20 137
21 140
22 144
23 149
24 155
25 162
26 170
27 179
28 189
29 200
30 204
31 209
32 215
33 222
34 230
35 239
36 249
37 260
38 272
39 285
40 291
41 298
42 306
43 315
44 325
45 336
46 348
47 361
48 375
49 390
50 398
51 407
52 417
53 428
54 440
55 453
56 467
57 482
58 498

List of values

[0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 47, 51, 57, 65, 75, 87, 101, 117, 135, 137, 140, 144, 149, 155, 162, 170, 179, 189, 200, 204, 209, 215, 222, 230, 239, 249, 260, 272, 285, 291, 298, 306, 315, 325, 336, 348, 361, 375, 390, 398, 407, 417, 428, 440, 453, 467, 482, 498]