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.

A380551 G.f. A(x) satisfies x = Sum_{n>=1} A( x^n*(1-x)^(2*n) ).

Table of values

n a(n)
1 1
2 1
3 6
4 28
5 142
6 720
7 3875
8 21288
9 120168
10 690546
11 4032014
12 23840724
13 142498691
14 859512043
15 5225263875
16 31983651216
17 196947587822
18 1219199232294
19 7583142491924
20 47365473951152
21 296983176365613
22 1868545308601424
23 11793499763070479
24 74650344221104632
25 473770694965305205
26 3014124873709172435

List of values

[1, 1, 6, 28, 142, 720, 3875, 21288, 120168, 690546, 4032014, 23840724, 142498691, 859512043, 5225263875, 31983651216, 196947587822, 1219199232294, 7583142491924, 47365473951152, 296983176365613, 1868545308601424, 11793499763070479, 74650344221104632, 473770694965305205, 3014124873709172435]