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.

A380778 Expansion of e.g.f. (1/x) * Series_Reversion( x * exp(-x / (1 + x)^2) / (1 + x)^2 ).

Table of values

n a(n)
0 1
1 3
2 21
3 238
4 3777
5 77616
6 1966381
7 59379888
8 2085295617
9 83580555520
10 3767468068581
11 188731359078912
12 10405256927541889
13 626236791181897728
14 40860738460515664125
15 2873352871221375440896
16 216652727562188159522049
17 17437704874236857627246592
18 1492289181734461545084103477

List of values

[1, 3, 21, 238, 3777, 77616, 1966381, 59379888, 2085295617, 83580555520, 3767468068581, 188731359078912, 10405256927541889, 626236791181897728, 40860738460515664125, 2873352871221375440896, 216652727562188159522049, 17437704874236857627246592, 1492289181734461545084103477]