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.

A072961 Numbers using only the digits 2 and 5, that are both curved and straight.

Table of values

n a(n)
1 2
2 5
3 22
4 25
5 52
6 55
7 222
8 225
9 252
10 255
11 522
12 525
13 552
14 555
15 2222
16 2225
17 2252
18 2255
19 2522
20 2525
21 2552
22 2555
23 5222
24 5225
25 5252
26 5255
27 5522
28 5525
29 5552
30 5555
31 22222
32 22225
33 22252
34 22255
35 22522
36 22525
37 22552
38 22555
39 25222
40 25225
41 25252
42 25255

List of values

[2, 5, 22, 25, 52, 55, 222, 225, 252, 255, 522, 525, 552, 555, 2222, 2225, 2252, 2255, 2522, 2525, 2552, 2555, 5222, 5225, 5252, 5255, 5522, 5525, 5552, 5555, 22222, 22225, 22252, 22255, 22522, 22525, 22552, 22555, 25222, 25225, 25252, 25255]

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

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