[seqfan] Re: A046452

Robert G. Wilson v rgwv at rgwv.com
Fri Jan 4 22:47:13 CET 2013


Because the prime factors of 3729 = 3*11*113 but that would make 311113
which is not 3729.

-----Original Message-----
From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of Harvey P.
Dale
Sent: Friday, January 04, 2013 2:59 PM
To: Sequence Fanatics Discussion list
Subject: [seqfan] A046452

            I believe I am misunderstanding something about the above
sequence.  Why aren't these numbers in the sequence: 3729, 28609, 28847,
28951, 29729, 29829?  And why does the definition read, "Concatenation of
the 3 prime factors of composite a(n) is a palindrome," rather than
"Concatenation of the 3 prime factors of n is a palindrome"?
            Clarification would be appreciated.
            Best,
            Harvey

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