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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.

A271879 Triangle T(n,t) by rows: The number of rooted forests with n 3-colored nodes and t rooted trees.

Table of values

n a(n)
1 3
2 9
3 6
4 45
5 27
6 10
7 246
8 180
9 54
10 15
11 1485
12 1143
13 405
14 90
15 21
16 9432
17 7704
18 2856
19 720
20 135
21 28
22 62625
23 52731
24 20682
25 5385
26 1125
27 189
28 36
29 428319
30 369969
31 150282
32 40914
33 8730
34 1620
35 252
36 45
37 3000393
38 2638332
39 1104702
40 309510
41 68400
42 12891
43 2205
44 324
45 55

List of values

[3, 9, 6, 45, 27, 10, 246, 180, 54, 15, 1485, 1143, 405, 90, 21, 9432, 7704, 2856, 720, 135, 28, 62625, 52731, 20682, 5385, 1125, 189, 36, 428319, 369969, 150282, 40914, 8730, 1620, 252, 45, 3000393, 2638332, 1104702, 309510, 68400, 12891, 2205, 324, 55]

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

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