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.

A233580 In balanced ternary notation, zerofree non-repdigit numbers that are either palindromes or sign reversed palindromes.

Table of values

n a(n)
1 2
2 7
3 16
4 20
5 32
6 43
7 61
8 103
9 124
10 146
11 182
12 196
13 292
14 302
15 338
16 367
17 421
18 547
19 601
20 859
21 913
22 1039
23 1096
24 1172
25 1280
26 1312
27 1600
28 1640
29 1748
30 1816
31 2560
32 2624
33 2732
34 2776
35 3064
36 3092
37 3200
38 3283
39 3445
40 3823
41 3985
42 4759
43 4921
44 5299
45 5461
46 7663
47 7825
48 8203

List of values

[2, 7, 16, 20, 32, 43, 61, 103, 124, 146, 182, 196, 292, 302, 338, 367, 421, 547, 601, 859, 913, 1039, 1096, 1172, 1280, 1312, 1600, 1640, 1748, 1816, 2560, 2624, 2732, 2776, 3064, 3092, 3200, 3283, 3445, 3823, 3985, 4759, 4921, 5299, 5461, 7663, 7825, 8203]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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