A340864 - cp's OEIS frontend

A340864 Numbers k such that both sigma_{-1}(k) > 2 and sigma_0(k)/sigma_{-1}(k) are integers.

n	a(n)
1	672
2	30240
3	32760
4	2178540
5	23569920
6	45532800
7	142990848
8	459818240
9	1379454720
10	14182439040
11	43861478400
12	51001180160
13	66433720320
14	153003540480
15	403031236608
16	704575228896
17	13661860101120
18	181742883469056
19	6088728021160320
20	14942123276641920
21	20158185857531904

[672, 30240, 32760, 2178540, 23569920, 45532800, 142990848, 459818240, 1379454720, 14182439040, 43861478400, 51001180160, 66433720320, 153003540480, 403031236608, 704575228896, 13661860101120, 181742883469056, 6088728021160320, 14942123276641920, 20158185857531904]

cp's OEIS Frontend

A340864 Numbers k such that both sigma_{-1}(k) > 2 and sigma_0(k)/sigma_{-1}(k) are integers.

Table of values

List of values