A245197 - cp's OEIS frontend

A245197 Numbers n where tau(n) and n-tau(n) are perfect squares, with tau(n) the number of divisors of n (A000005).

n	a(n)
1	1
2	8
3	85
4	125
5	365
6	445
7	533
8	629
9	965
10	1685
11	1800
12	1853
13	2340
14	2605
15	2813
16	3029
17	3973
18	4765
19	5045
20	5220
21	5629
22	5933
23	6245
24	6893
25	8285
26	8653
27	11029
28	11453
29	11885
30	12773
31	14165
32	15133
33	16645
34	17165
35	17460
36	17693
37	20453
38	21029
39	22205
40	22805
41	23413
42	24653
43	27229

[1, 8, 85, 125, 365, 445, 533, 629, 965, 1685, 1800, 1853, 2340, 2605, 2813, 3029, 3973, 4765, 5045, 5220, 5629, 5933, 6245, 6893, 8285, 8653, 11029, 11453, 11885, 12773, 14165, 15133, 16645, 17165, 17460, 17693, 20453, 21029, 22205, 22805, 23413, 24653, 27229]

cp's OEIS Frontend

A245197 Numbers n where tau(n) and n-tau(n) are perfect squares, with tau(n) the number of divisors of n (A000005).

Table of values

List of values