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.

A071686 Smallest solution to gcd(x, Rev(x)) = 2^n.

Table of values

n a(n)
1 2
2 4
3 8
4 2192
5 21920
6 291008
7 610688
8 2112256
9 2131456
10 2937856
11 25329664
12 230465536
13 694018048
14 2344321024
15 4688642048
16 2112421888
17 65012891648
18 650128916480
19 4494196736
20 63769149440
21 637691494400
22 23842827272192
23 276298064723968
24 420127895977984
25 4897795987210240

List of values

[2, 4, 8, 2192, 21920, 291008, 610688, 2112256, 2131456, 2937856, 25329664, 230465536, 694018048, 2344321024, 4688642048, 2112421888, 65012891648, 650128916480, 4494196736, 63769149440, 637691494400, 23842827272192, 276298064723968, 420127895977984, 4897795987210240]

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

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