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.

A372254 Number A(n,k) of acyclic orientations of the complete tripartite graph K_{n,n,k}; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

n a(n)
0 1
1 1
2 2
3 1
4 6
5 14
6 1
7 18
8 78
9 230
10 1
11 54
12 426
13 1902
14 6902
15 1
16 162
17 2286
18 15402
19 76110
20 329462
21 1
22 486
23 12090
24 122190
25 822954
26 4553166
27 22934774
28 1
29 1458
30 63198
31 951546
32 8724078
33 61796298
34 381523758
35 2193664790
36 1
37 4374
38 327306
39 7290942
40 90768378
41 823457454
42 6241779786
43 42700751022
44 276054834902

List of values

[1, 1, 2, 1, 6, 14, 1, 18, 78, 230, 1, 54, 426, 1902, 6902, 1, 162, 2286, 15402, 76110, 329462, 1, 486, 12090, 122190, 822954, 4553166, 22934774, 1, 1458, 63198, 951546, 8724078, 61796298, 381523758, 2193664790, 1, 4374, 327306, 7290942, 90768378, 823457454, 6241779786, 42700751022, 276054834902]