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.

A180036 Eight white queens and one red queen on a 3 X 3 chessboard. G.f.: (1 - 2*x)/(1 - 5*x - 3*x^2).

Table of values

n a(n)
0 1
1 3
2 18
3 99
4 549
5 3042
6 16857
7 93411
8 517626
9 2868363
10 15894693
11 88078554
12 488076849
13 2704619907
14 14987330082
15 83050510131
16 460214540901
17 2550224234898
18 14131764797193
19 78309496690659
20 433942777844874

List of values

[1, 3, 18, 99, 549, 3042, 16857, 93411, 517626, 2868363, 15894693, 88078554, 488076849, 2704619907, 14987330082, 83050510131, 460214540901, 2550224234898, 14131764797193, 78309496690659, 433942777844874]