A161896 - cp's OEIS frontend

A161896 Integers n for which k = (9^n - 3 * 3^n - 4n) / (2n * (2n + 1)) is an integer.

n	a(n)
1	5
2	11
3	23
4	29
5	41
6	53
7	83
8	89
9	113
10	131
11	173
12	179
13	191
14	233
15	239
16	251
17	281
18	293
19	359
20	419
21	431
22	443
23	491
24	509
25	593
26	641
27	653
28	659
29	683
30	719
31	743
32	761
33	809
34	911
35	953
36	1013
37	1019
38	1031
39	1049
40	1103
41	1223
42	1229
43	1289
44	1409
45	1439
46	1451
47	1481
48	1499
49	1511
50	1541
51	1559

[5, 11, 23, 29, 41, 53, 83, 89, 113, 131, 173, 179, 191, 233, 239, 251, 281, 293, 359, 419, 431, 443, 491, 509, 593, 641, 653, 659, 683, 719, 743, 761, 809, 911, 953, 1013, 1019, 1031, 1049, 1103, 1223, 1229, 1289, 1409, 1439, 1451, 1481, 1499, 1511, 1541, 1559]

cp's OEIS Frontend

A161896 Integers n for which k = (9^n - 3 * 3^n - 4n) / (2n * (2n + 1)) is an integer.

Table of values

List of values