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.

A187298 Number of 3-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.

Table of values

n a(n)
1 0
2 2
3 36
4 98
5 198
6 330
7 494
8 690
9 918
10 1178
11 1470
12 1794
13 2150
14 2538
15 2958
16 3410
17 3894
18 4410
19 4958
20 5538
21 6150
22 6794
23 7470
24 8178
25 8918
26 9690
27 10494
28 11330
29 12198
30 13098
31 14030
32 14994
33 15990
34 17018
35 18078
36 19170
37 20294
38 21450
39 22638
40 23858
41 25110
42 26394

List of values

[0, 2, 36, 98, 198, 330, 494, 690, 918, 1178, 1470, 1794, 2150, 2538, 2958, 3410, 3894, 4410, 4958, 5538, 6150, 6794, 7470, 8178, 8918, 9690, 10494, 11330, 12198, 13098, 14030, 14994, 15990, 17018, 18078, 19170, 20294, 21450, 22638, 23858, 25110, 26394]