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.

A180033 Eight white queens and one red queen on a 3 X 3 chessboard. G.f.: (1 + x)/(1 - 5*x - 5*x^2).

Table of values

n a(n)
0 1
1 6
2 35
3 205
4 1200
5 7025
6 41125
7 240750
8 1409375
9 8250625
10 48300000
11 282753125
12 1655265625
13 9690093750
14 56726796875
15 332084453125
16 1944056250000
17 11380703515625
18 66623798828125
19 390022511718750
20 2283231552734375

List of values

[1, 6, 35, 205, 1200, 7025, 41125, 240750, 1409375, 8250625, 48300000, 282753125, 1655265625, 9690093750, 56726796875, 332084453125, 1944056250000, 11380703515625, 66623798828125, 390022511718750, 2283231552734375]