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.

A231230 Numbers k such that, in the prime factorization of k, the sum of the primes equals the squared sum of exponents.

Table of values

n a(n)
1 1
2 28
3 98
4 132
5 198
6 351
7 368
8 726
9 1092
10 1375
11 1488
12 1521
13 1540
14 1638
15 2232
16 2295
17 2320
18 3008
19 3025
20 3348
21 3822
22 3825
23 3850
24 4048
25 4232
26 5022
27 5390
28 5800
29 6375
30 6591
31 6655
32 7098
33 7980
34 8470
35 11328
36 11375
37 11970
38 12012
39 12432
40 13005
41 14500
42 15925
43 16992
44 18018

List of values

[1, 28, 98, 132, 198, 351, 368, 726, 1092, 1375, 1488, 1521, 1540, 1638, 2232, 2295, 2320, 3008, 3025, 3348, 3822, 3825, 3850, 4048, 4232, 5022, 5390, 5800, 6375, 6591, 6655, 7098, 7980, 8470, 11328, 11375, 11970, 12012, 12432, 13005, 14500, 15925, 16992, 18018]