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.

A381913 Expansion of (1/x) * Series_Reversion( x * (1-x)^3 / B(x) ), where B(x) is the g.f. of A001764.

Table of values

n a(n)
0 1
1 4
2 28
3 245
4 2422
5 25860
6 291106
7 3405405
8 41014131
9 505344113
10 6341182427
11 80768735045
12 1041645452650
13 13575670575944
14 178528253213469
15 2366073408348545
16 31571528771106126
17 423794981085407622
18 5718929869862880055
19 77539914280883389432
20 1055790501909183080512

List of values

[1, 4, 28, 245, 2422, 25860, 291106, 3405405, 41014131, 505344113, 6341182427, 80768735045, 1041645452650, 13575670575944, 178528253213469, 2366073408348545, 31571528771106126, 423794981085407622, 5718929869862880055, 77539914280883389432, 1055790501909183080512]