A277389 - cp's OEIS frontend

A277389 Numbers k such that lambda(k)^3 divides (k-1)^2, where lambda(k) = A002322(k).

n	a(n)
1	1
2	2
3	1729
4	19683001
5	367804801
6	631071001
7	2064236401
8	2320690177
9	24899816449
10	40017045601
11	110592000001
12	137299665601
13	432081216001
14	479534887801
15	760355883001
16	1111195454401
17	3176523000001
18	3495866888449
19	3837165696001
20	8571867768001
21	14373832968001

[1, 2, 1729, 19683001, 367804801, 631071001, 2064236401, 2320690177, 24899816449, 40017045601, 110592000001, 137299665601, 432081216001, 479534887801, 760355883001, 1111195454401, 3176523000001, 3495866888449, 3837165696001, 8571867768001, 14373832968001]

cp's OEIS Frontend

A277389 Numbers k such that lambda(k)^3 divides (k-1)^2, where lambda(k) = A002322(k).

Table of values

List of values