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.

A203167 (n-1)-st elementary symmetric function of the first n terms of (2,2,1,2,2,1,2,2,1,...)=(A130196 for n>0).

Table of values

n a(n)
1 1
2 4
3 8
4 20
5 48
6 64
7 144
8 320
9 384
10 832
11 1792
12 2048
13 4352
14 9216
15 10240
16 21504
17 45056
18 49152
19 102400
20 212992
21 229376
22 475136
23 983040
24 1048576
25 2162688
26 4456448
27 4718592
28 9699328
29 19922944
30 20971520
31 42991616
32 88080384
33 92274688
34 188743680

List of values

[1, 4, 8, 20, 48, 64, 144, 320, 384, 832, 1792, 2048, 4352, 9216, 10240, 21504, 45056, 49152, 102400, 212992, 229376, 475136, 983040, 1048576, 2162688, 4456448, 4718592, 9699328, 19922944, 20971520, 42991616, 88080384, 92274688, 188743680]