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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.

A083930 Map from binary trees of size n to the set of corresponding trivalent plane trees (tpt) represented as size 2n+1 general trees.

Table of values

n a(n)
0 0
1 7
2 49
3 57
4 439
5 452
6 515
7 541
8 585
9 4612
10 4631
11 4757
12 4795
13 4865
14 5455
15 5468
16 5744
17 5795
18 5865
19 6268
20 6294
21 6433
22 6688
23 53200
24 53226
25 53448
26 53500
27 53604
28 54935
29 54954
30 55430
31 55501
32 55605
33 56356
34 56394
35 56601
36 57003
37 63294
38 63313
39 63439

List of values

[0, 7, 49, 57, 439, 452, 515, 541, 585, 4612, 4631, 4757, 4795, 4865, 5455, 5468, 5744, 5795, 5865, 6268, 6294, 6433, 6688, 53200, 53226, 53448, 53500, 53604, 54935, 54954, 55430, 55501, 55605, 56356, 56394, 56601, 57003, 63294, 63313, 63439]

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

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