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.

A385300 Integers k containing only odd digits, except the last digit, such that k^2 is composed of only even digits.

Table of values

n a(n)
1 2
2 8
3 78
4 92
5 932
6 7798
7 51192
8 939398
9 5157798
10 7797578
11 7797978
12 9393978
13 15119592
14 15773398
15 53179378
16 53559332
17 77979998
18 79175932
19 155139378
20 157759592
21 517751738
22 535393932
23 917933998
24 939597798
25 1511979592
26 5157759592
27 7771757978
28 7775735378
29 9393959798

List of values

[2, 8, 78, 92, 932, 7798, 51192, 939398, 5157798, 7797578, 7797978, 9393978, 15119592, 15773398, 53179378, 53559332, 77979998, 79175932, 155139378, 157759592, 517751738, 535393932, 917933998, 939597798, 1511979592, 5157759592, 7771757978, 7775735378, 9393959798]

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

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