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.

A053064 Alternately append n to end or beginning of previous term.

Table of values

n a(n)
1 1
2 12
3 312
4 3124
5 53124
6 531246
7 7531246
8 75312468
9 975312468
10 97531246810
11 1197531246810
12 119753124681012
13 13119753124681012
14 1311975312468101214
15 151311975312468101214
16 15131197531246810121416
17 1715131197531246810121416
18 171513119753124681012141618

List of values

[1, 12, 312, 3124, 53124, 531246, 7531246, 75312468, 975312468, 97531246810, 1197531246810, 119753124681012, 13119753124681012, 1311975312468101214, 151311975312468101214, 15131197531246810121416, 1715131197531246810121416, 171513119753124681012141618]