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.

A082679 Number of LEGO towers, one piece per floor, where every floor is perpendicular to the one below it (so we have a kind of 3-dimensional zigzag pattern).

Table of values

n a(n)
0 0
1 1
2 2
3 6
4 20
5 69
6 241
7 845
8 2966
9 10414
10 36568
11 128409
12 450913
13 1583401
14 5560186
15 19524854
16 68562444
17 240760253
18 845440977
19 2968805845
20 10425101678
21 36608235998
22 128551546480
23 451414815601
24 1585164405441

List of values

[0, 1, 2, 6, 20, 69, 241, 845, 2966, 10414, 36568, 128409, 450913, 1583401, 5560186, 19524854, 68562444, 240760253, 845440977, 2968805845, 10425101678, 36608235998, 128551546480, 451414815601, 1585164405441]