A066845 - cp's OEIS frontend

A066845 a(n) = (lcm_{k=0..n} (2^k + 1))/(lcm_{k=0..n-1} (2^k + 1)).

n	a(n)
1	3
2	5
3	3
4	17
5	11
6	13
7	43
8	257
9	57
10	205
11	683
12	241
13	2731
14	3277
15	331
16	65537
17	43691
18	4033
19	174763
20	61681
21	5419
22	838861
23	2796203
24	65281
25	1016801
26	13421773
27	261633
28	15790321
29	178956971
30	80581
31	715827883
32	4294967297
33	1397419
34	3435973837

[3, 5, 3, 17, 11, 13, 43, 257, 57, 205, 683, 241, 2731, 3277, 331, 65537, 43691, 4033, 174763, 61681, 5419, 838861, 2796203, 65281, 1016801, 13421773, 261633, 15790321, 178956971, 80581, 715827883, 4294967297, 1397419, 3435973837]

cp's OEIS Frontend

A066845 a(n) = (lcm_{k=0..n} (2^k + 1))/(lcm_{k=0..n-1} (2^k + 1)).

Table of values

List of values