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.

A349109 Powerful numbers (A001694) whose sum of powerful divisors (including 1) is also powerful.

Table of values

n a(n)
1 1
2 64
3 243
4 441
5 1764
6 9800
7 15552
8 28224
9 41616
10 60516
11 82369
12 88200
13 189728
14 226576
15 329476
16 336200
17 648675
18 741321
19 968256
20 1317904
21 1428025
22 1707552
23 1943236
24 2039184
25 2056356
26 2381400
27 2446227
28 2798929
29 2965284
30 2986568
31 4372281
32 5189400
33 5271616
34 6508832

List of values

[1, 64, 243, 441, 1764, 9800, 15552, 28224, 41616, 60516, 82369, 88200, 189728, 226576, 329476, 336200, 648675, 741321, 968256, 1317904, 1428025, 1707552, 1943236, 2039184, 2056356, 2381400, 2446227, 2798929, 2965284, 2986568, 4372281, 5189400, 5271616, 6508832]

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

Content is available under The OEIS End-User License Agreement.