A379121 - cp's OEIS frontend

A379121 Odd squares k for which A379113(k) > 1, i.e., k that have a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).

n	a(n)
1	225
2	3025
3	3249
4	12321
5	29241
6	38025
7	91809
8	216225
9	247009
10	354025
11	408321
12	751689
13	772641
14	855625
15	919681
16	1366561
17	1595169
18	3814209
19	9828225
20	11189025
21	12173121
22	12709225
23	29430625
24	47927929
25	52403121
26	66471409
27	67486225
28	77457601
29	80263681
30	94148209
31	100661089
32	110397049
33	126540001
34	204232681
35	264875625
36	328878225

[225, 3025, 3249, 12321, 29241, 38025, 91809, 216225, 247009, 354025, 408321, 751689, 772641, 855625, 919681, 1366561, 1595169, 3814209, 9828225, 11189025, 12173121, 12709225, 29430625, 47927929, 52403121, 66471409, 67486225, 77457601, 80263681, 94148209, 100661089, 110397049, 126540001, 204232681, 264875625, 328878225]

cp's OEIS Frontend

A379121 Odd squares k for which A379113(k) > 1, i.e., k that have a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).

Table of values

List of values