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.

A140983 E.g.f. is reversion of (2(1+x)log(1+x)+x^2+2x)/( (2+x)^2(1+x) ).

Table of values

n a(n)
1 1
2 3
3 17
4 145
5 1663
6 24031
7 419521
8 8592417
9 202069759
10 5367258479
11 158934860321
12 5191969220945
13 185490468312767
14 7194912503747775
15 301130097048242561
16 13526711564792340289
17 649121580063333263359
18 33142745983169890692559

List of values

[1, 3, 17, 145, 1663, 24031, 419521, 8592417, 202069759, 5367258479, 158934860321, 5191969220945, 185490468312767, 7194912503747775, 301130097048242561, 13526711564792340289, 649121580063333263359, 33142745983169890692559]