Primes in A000670; prime ordered Bell numbers; prime Fubini numbers
Jonathan Post
jvospost3 at gmail.com
Wed Oct 17 09:44:20 CEST 2007
I'd no sooner said that "primes of the form xxx" is usually not an
interesting sequence, when I started to wonder about:
Primes in A000670
1, 13, 541, 47293, 7087261, 526858348381
njas gives the table of first 100 values of A000670.
n such that A000670(n) is prime begin 2, 3, 5, 7, 9, 13.
Is there something obvious about this which is staring me in the face?
More information about the SeqFan
mailing list