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.

A274147 Number of integers in n-th generation of tree T(-1/2) defined in Comments.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 2
5 4
6 6
7 9
8 13
9 20
10 31
11 48
12 70
13 108
14 165
15 250
16 379
17 575
18 875
19 1332
20 2017
21 3066
22 4661
23 7076
24 10751
25 16328
26 24801
27 37684
28 57229
29 86931
30 132062
31 200588
32 304701
33 462844
34 703043
35 1067955
36 1622207
37 2464117
38 3743047
39 5685655
40 8636525
41 13118942
42 19927624
43 30270167
44 45980452
45 69844296
46 106093768

List of values

[1, 1, 1, 2, 2, 4, 6, 9, 13, 20, 31, 48, 70, 108, 165, 250, 379, 575, 875, 1332, 2017, 3066, 4661, 7076, 10751, 16328, 24801, 37684, 57229, 86931, 132062, 200588, 304701, 462844, 703043, 1067955, 1622207, 2464117, 3743047, 5685655, 8636525, 13118942, 19927624, 30270167, 45980452, 69844296, 106093768]

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

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