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.

A175656 Eight bishops and one elephant on a 3 X 3 chessboard. G.f.: (1-3*x^2)/(1-3*x+4*x^3).

Table of values

n a(n)
0 1
1 3
2 6
3 14
4 30
5 66
6 142
7 306
8 654
9 1394
10 2958
11 6258
12 13198
13 27762
14 58254
15 121970
16 254862
17 531570
18 1106830
19 2301042
20 4776846
21 9903218
22 20505486
23 42409074
24 87614350
25 180821106
26 372827022
27 768023666
28 1580786574
29 3251051634

List of values

[1, 3, 6, 14, 30, 66, 142, 306, 654, 1394, 2958, 6258, 13198, 27762, 58254, 121970, 254862, 531570, 1106830, 2301042, 4776846, 9903218, 20505486, 42409074, 87614350, 180821106, 372827022, 768023666, 1580786574, 3251051634]