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.

A053038 The first (largest) power of 2 arising in the iteration-sequence when A051953 (the cototient function) is repeatedly applied starting with n!.

Table of values

n a(n)
1 1
2 2
3 4
4 16
5 32
6 128
7 512
8 4096
9 16384
10 2048
11 8192
12 65536
13 16384
14 65536
15 8388608
16 134217728
17 8388608
18 8388608
19 16777216
20 2097152
21 8388608
22 268435456
23 4398046511104
24 70368744177664
25 67108864
26 67108864
27 67108864
28 68719476736

List of values

[1, 2, 4, 16, 32, 128, 512, 4096, 16384, 2048, 8192, 65536, 16384, 65536, 8388608, 134217728, 8388608, 8388608, 16777216, 2097152, 8388608, 268435456, 4398046511104, 70368744177664, 67108864, 67108864, 67108864, 68719476736]

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

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