A225882 - cp's OEIS frontend

A225882 Numbers k such that core(k) is equal to the sum of the proper square divisors of k, where core(k) = A007913(k).

n	a(n)
1	20
2	90
3	336
4	650
5	5440
6	7371
7	13000
8	14762
9	28730
10	30240
11	83810
12	87296
13	130682
14	147420
15	218400
16	280370
17	295240
18	406875
19	708122
20	924482
21	1397760
22	1875530
23	2613640
24	3536000
25	4881890
26	4960032
27	5884851
28	7856640
29	7893290
30	8137500

[20, 90, 336, 650, 5440, 7371, 13000, 14762, 28730, 30240, 83810, 87296, 130682, 147420, 218400, 280370, 295240, 406875, 708122, 924482, 1397760, 1875530, 2613640, 3536000, 4881890, 4960032, 5884851, 7856640, 7893290, 8137500]

cp's OEIS Frontend

A225882 Numbers k such that core(k) is equal to the sum of the proper square divisors of k, where core(k) = A007913(k).

Table of values

List of values