A235540 - cp's OEIS frontend

A235540 Composite numbers m such that (4^m - 2^m + 8m^2 - 2) / (2m(2m + 1)) is an integer.

n	a(n)
1	243
2	891
3	1539
4	2211
5	2511
6	13203
7	19683
8	87723
9	92583
10	150851
11	202851
12	292923
13	321651
14	399771
15	412623
16	452051
17	1325843
18	1330551
19	1441091
20	1566891
21	3026871
22	4422231
23	4954851
24	4974971
25	5016191
26	5845851
27	5971239
28	6773139
29	11050911
30	11720511
31	12602871
32	14666751

[243, 891, 1539, 2211, 2511, 13203, 19683, 87723, 92583, 150851, 202851, 292923, 321651, 399771, 412623, 452051, 1325843, 1330551, 1441091, 1566891, 3026871, 4422231, 4954851, 4974971, 5016191, 5845851, 5971239, 6773139, 11050911, 11720511, 12602871, 14666751]

cp's OEIS Frontend

A235540 Composite numbers m such that (4^m - 2^m + 8m^2 - 2) / (2m(2m + 1)) is an integer.

Table of values

List of values

cp's OEIS Frontend

A235540 Composite numbers m such that (4^m - 2^m + 8*m^2 - 2) / (2*m*(2*m + 1)) is an integer.

Table of values

List of values

A235540 Composite numbers m such that (4^m - 2^m + 8m^2 - 2) / (2m(2m + 1)) is an integer.