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.

A287389 Both k and its reverse are one less than a square.

Table of values

n a(n)
1 0
2 3
3 8
4 80
5 99
6 323
7 360
8 575
9 840
10 4224
11 5775
12 9999
13 32760
14 36480
15 36863
16 42024
17 84680
18 349280
19 808200
20 829920
21 848240
22 998000
23 999999
24 3055503
25 3272480
26 3426200
27 3640463
28 3644280
29 3682560
30 5597955
31 8462280
32 8803088
33 30481440
34 32855823
35 80622440
36 99999999

List of values

[0, 3, 8, 80, 99, 323, 360, 575, 840, 4224, 5775, 9999, 32760, 36480, 36863, 42024, 84680, 349280, 808200, 829920, 848240, 998000, 999999, 3055503, 3272480, 3426200, 3640463, 3644280, 3682560, 5597955, 8462280, 8803088, 30481440, 32855823, 80622440, 99999999]