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.

A136929 Numbers k such that k and k^2 use only the digits 0, 3, 4, 5 and 9.

Table of values

n a(n)
1 0
2 3
3 30
4 300
5 3000
6 30000
7 30503
8 30903
9 300000
10 305030
11 309030
12 550503
13 950503
14 953903
15 3000000
16 3005003
17 3009003
18 3050300
19 3055003
20 3090300
21 5505030
22 9505030
23 9539030
24 30000000
25 30050030
26 30090030
27 30503000
28 30550030
29 30903000
30 55050300
31 95050300
32 95055003
33 95390300
34 300000000
35 300050003
36 300050503
37 300090003
38 300500300

List of values

[0, 3, 30, 300, 3000, 30000, 30503, 30903, 300000, 305030, 309030, 550503, 950503, 953903, 3000000, 3005003, 3009003, 3050300, 3055003, 3090300, 5505030, 9505030, 9539030, 30000000, 30050030, 30090030, 30503000, 30550030, 30903000, 55050300, 95050300, 95055003, 95390300, 300000000, 300050003, 300050503, 300090003, 300500300]

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

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