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.

A187858 Number of 3-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-queen's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions.

Table of values

n a(n)
1 0
2 2
3 81
4 254
5 578
6 1030
7 1610
8 2318
9 3154
10 4118
11 5210
12 6430
13 7778
14 9254
15 10858
16 12590
17 14450
18 16438
19 18554
20 20798
21 23170
22 25670
23 28298
24 31054
25 33938
26 36950
27 40090
28 43358
29 46754
30 50278
31 53930
32 57710
33 61618
34 65654
35 69818
36 74110
37 78530
38 83078
39 87754
40 92558

List of values

[0, 2, 81, 254, 578, 1030, 1610, 2318, 3154, 4118, 5210, 6430, 7778, 9254, 10858, 12590, 14450, 16438, 18554, 20798, 23170, 25670, 28298, 31054, 33938, 36950, 40090, 43358, 46754, 50278, 53930, 57710, 61618, 65654, 69818, 74110, 78530, 83078, 87754, 92558]