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.

A380733 Numbers k such that the prime index of the largest prime dividing k is smaller than or equal to the minimum exponent in the prime factorization of k; a(1) = 1 by convention.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 9
6 16
7 27
8 32
9 36
10 64
11 72
12 81
13 108
14 125
15 128
16 144
17 216
18 243
19 256
20 288
21 324
22 432
23 512
24 576
25 625
26 648
27 729
28 864
29 972
30 1000
31 1024
32 1152
33 1296
34 1728
35 1944
36 2000
37 2048
38 2187
39 2304
40 2401
41 2592
42 2916
43 3125
44 3375
45 3456
46 3888
47 4000
48 4096
49 4608
50 5000
51 5184
52 5832

List of values

[1, 2, 4, 8, 9, 16, 27, 32, 36, 64, 72, 81, 108, 125, 128, 144, 216, 243, 256, 288, 324, 432, 512, 576, 625, 648, 729, 864, 972, 1000, 1024, 1152, 1296, 1728, 1944, 2000, 2048, 2187, 2304, 2401, 2592, 2916, 3125, 3375, 3456, 3888, 4000, 4096, 4608, 5000, 5184, 5832]