[seqfan] Re: relation A091440 to A167348
franktaw at netscape.net
franktaw at netscape.net
Thu Sep 3 21:54:47 CEST 2009
I agree that they are duplicates. I have submitted a merged version of
A091440.
I would recommend that A167348 be retained as a dead sequence instead
of being deleted; someone may again search for 2,2,3,7,....
Note that these could be considered two valid sequences, one allowing
only primes and the other allowing non-primes. Ironically, their
descriptions would need to be reversed for this to work.
Franklin T. Adams-Watters
-----Original Message-----
From: Richard Mathar <mathar at strw.leidenuniv.nl>
I see that the sequences A091440 and A167348
differ at n=1, because the PARI program in A167348 does not
define primorials smaller than 2, wheras A091440 makes it
very clear what its definition of primorials are. I cannot find
the alternative where p# >= 2 in the OEIS. Does this mean
that A167348 is just an erroneous version of A091440?
http://research.att.com/~njas/sequences/?q=id:A167348|id:A091440
2,2,3,7,13,23,43,79,149,257,461,821,1451,2549,4483,7879,13859,24247,42683
,75037,131707,230773,405401,710569,1246379,2185021,3831913,
1,2,3,7,13,23,43,79,149,257,461,821,1451,2549,4483,7879,13859,24247,42683
,75037,131707,230773,405401,710569,1246379,2185021,3831913,6720059,117815
51,20657677,36221753,63503639,111333529,195199289,
RJM
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