A162284 - cp's OEIS frontend

A162284 Odd numbers n such that b(n) >= n and b(b(n)) >= n, where b(n) = A161942(n) = oddpart(sigma(n)).

n	a(n)
1	1
2	81
3	18966025
4	135187129
5	164275489
6	350561925
7	445421025
8	598047025
9	649587169
10	748733769
11	850830561
12	960362325
13	1055925025
14	1341097641
15	1406175001
16	1476326929
17	1520766009
18	1536248025
19	1591004025
20	1735566525

[1, 81, 18966025, 135187129, 164275489, 350561925, 445421025, 598047025, 649587169, 748733769, 850830561, 960362325, 1055925025, 1341097641, 1406175001, 1476326929, 1520766009, 1536248025, 1591004025, 1735566525]

cp's OEIS Frontend

A162284 Odd numbers n such that b(n) >= n and b(b(n)) >= n, where b(n) = A161942(n) = oddpart(sigma(n)).

Table of values

List of values