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.

A287294 Concatenation of sequence (2n-1,2n-3,..,3,1,3,..,2n-3,2n-1).

Table of values

n a(n)
1 1
2 313
3 53135
4 7531357
5 975313579
6 1197531357911
7 13119753135791113
8 151311975313579111315
9 1715131197531357911131517
10 19171513119753135791113151719
11 211917151311975313579111315171921
12 2321191715131197531357911131517192123

List of values

[1, 313, 53135, 7531357, 975313579, 1197531357911, 13119753135791113, 151311975313579111315, 1715131197531357911131517, 19171513119753135791113151719, 211917151311975313579111315171921, 2321191715131197531357911131517192123]

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

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