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.

A293520 Number of dying nodes (withering branches) at generation n in the binary tree of persistently squarefree numbers (A293230).

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 1
5 2
6 2
7 1
8 2
9 3
10 3
11 4
12 9
13 6
14 13
15 11
16 21
17 32
18 40
19 52
20 60
21 64
22 90
23 129
24 169
25 242
26 321
27 434
28 549
29 808
30 1026
31 1395
32 1929
33 2551
34 3405
35 4578
36 6131
37 8275
38 11196
39 14814
40 20198
41 26823
42 36295
43 48840
44 65337
45 87634
46 118138
47 158324
48 212870
49 287014

List of values

[0, 0, 0, 0, 1, 2, 2, 1, 2, 3, 3, 4, 9, 6, 13, 11, 21, 32, 40, 52, 60, 64, 90, 129, 169, 242, 321, 434, 549, 808, 1026, 1395, 1929, 2551, 3405, 4578, 6131, 8275, 11196, 14814, 20198, 26823, 36295, 48840, 65337, 87634, 118138, 158324, 212870, 287014]

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

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