[seqfan] Re: Observation on the divisors of 136

[Jeremy Gardiner]

Thanks for assistance from several seqfans.

For a(n) = 2^(2^n - 1)*(2^(2^n) + 1) I calculate these values:

10
136
32896
2147516416
9223372039002259456
170141183460469231740910675752738881536
5789604461865809771178549250434395392680513351628075125146047930767244892569
6

Jeremy 
------ Message
From: Brad Klee
Date: Sat, 30 Dec 2017 04:03:35 -0600
To: Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
Subject: [seqfan] Re: Observation on the divisors of 136

[...] > It seems your proposed sequence will just be powers of two
interspersed with a few extra values related to
> Fermat Primes or the primes of A092506, >2^(2^n - 1)*(2^(2^n) + 1)

[...]