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.

A307049 Irregular table read by rows: The number of acyclic digraphs on n labeled nodes with k descents.

Table of values

n a(n)
1 1
2 2
3 1
4 8
5 11
6 5
7 1
8 64
9 161
10 167
11 102
12 39
13 9
14 1
15 1024
16 3927
17 6698
18 7185
19 5477
20 3107
21 1329
22 423
23 96
24 14
25 1
26 32768
27 172665
28 419364
29 656733
30 757939
31 686425
32 504084
33 305207
34 153333
35 63789
36 21752
37 5959
38 1267
39 197
40 20
41 1
42 2097152
43 14208231
44 45263175
45 94040848
46 145990526
47 181444276
48 187742937
49 165596535

List of values

[1, 2, 1, 8, 11, 5, 1, 64, 161, 167, 102, 39, 9, 1, 1024, 3927, 6698, 7185, 5477, 3107, 1329, 423, 96, 14, 1, 32768, 172665, 419364, 656733, 757939, 686425, 504084, 305207, 153333, 63789, 21752, 5959, 1267, 197, 20, 1, 2097152, 14208231, 45263175, 94040848, 145990526, 181444276, 187742937, 165596535]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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