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.

A028413 Numbers k such that k^2 + k + 1 is a palindrome.

Table of values

n a(n)
1 0
2 1
3 2
4 10
5 18
6 27
7 100
8 125
9 173
10 1000
11 1120
12 1184
13 1355
14 1836
15 1876
16 1961
17 10000
18 11915
19 100000
20 119084
21 126935
22 187876
23 188348
24 192383
25 196813
26 1000000
27 1010200
28 1190915
29 1228425
30 1780728
31 1821636
32 1975356
33 10000000
34 11842184
35 12643549
36 12783239
37 18016058

List of values

[0, 1, 2, 10, 18, 27, 100, 125, 173, 1000, 1120, 1184, 1355, 1836, 1876, 1961, 10000, 11915, 100000, 119084, 126935, 187876, 188348, 192383, 196813, 1000000, 1010200, 1190915, 1228425, 1780728, 1821636, 1975356, 10000000, 11842184, 12643549, 12783239, 18016058]