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.

A375450 Expansion of g.f. A(x) satisfying 0 = Sum_{k=0..n} (-1)^k * binomial(2*n-k,k) * ([x^k] A(x)^n) for n >= 1.

Table of values

n a(n)
0 1
1 1
2 2
3 9
4 75
5 960
6 17056
7 398023
8 11785624
9 431999096
10 19225521917
11 1022238356603
12 64053139874787
13 4673871388801269
14 393051019651091208
15 37747728969729478069
16 4106730533743416782815
17 502513668471090178354603
18 68716238916399477889072499
19 10440633447359638146139853297

List of values

[1, 1, 2, 9, 75, 960, 17056, 398023, 11785624, 431999096, 19225521917, 1022238356603, 64053139874787, 4673871388801269, 393051019651091208, 37747728969729478069, 4106730533743416782815, 502513668471090178354603, 68716238916399477889072499, 10440633447359638146139853297]