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.

A103973 Expansion of (sqrt(1-8*x^2)+8*x^2+2*x-1)/(2*x*sqrt(1-8*x^2)).

Table of values

n a(n)
0 1
1 2
2 4
3 4
4 24
5 16
6 160
7 80
8 1120
9 448
10 8064
11 2688
12 59136
13 16896
14 439296
15 109824
16 3294720
17 732160
18 24893440
19 4978688
20 189190144
21 34398208
22 1444724736
23 240787456
24 11076222976
25 1704034304
26 85201715200
27 12171673600
28 657270374400

List of values

[1, 2, 4, 4, 24, 16, 160, 80, 1120, 448, 8064, 2688, 59136, 16896, 439296, 109824, 3294720, 732160, 24893440, 4978688, 189190144, 34398208, 1444724736, 240787456, 11076222976, 1704034304, 85201715200, 12171673600, 657270374400]