NEW SEQUENCE: Semiprime gaps without primes

[zak seidov]

Neil,
can you please add %E from Jacques Tramu

%E A000001 terms a(37-40) from Jacques Tramu
(jacques.tramu at echolalie.com):
63305661, 90455097, 189662206, 120175651

thanks, zak


 
--- Jacques Tramu <jacques.tramu at echolalie.com> wrote:

> 
> > Neil, Jack, seqfans,
> > any comments?
> >
> > %I A000001
> > %S A000001
> >
>
9,49,62,403,341,843,6722,3473,2869,14059,18467,26603,166126,41779,74491,192061,463161,226489,344119,517421,943606,2171131,4577519,584213,2560177,4356633,8367139,11174753,13191293,7319797,27841051,10644122,13683034,29492893,47735342,26837363
> > %N A000001 a(n)=smallest semiprime s1 such that
> > between s1 and s2=nextsemiprime(s1)=s1+n there is
> no
> > prime.
> > %e A000001 a(1)=9 because between 9 and 10 there
> is no
> > prime,
> > a(2)=49 because between 49 and 51 there is no
> prime,
> > ...
> > %A A000001 Jack Brennen (jb at brennen.net) and Zak
> > Seidov (zakseidov at yahoo.com), Dec 23 2007
> 
> Hi,
> I checked the above sequence, found same results,
> and, as a Christmas gift,
> I add  the following terms :
> 
> 37 63305661
> 38 90455097
> 39 189662206
> 40 120175651
> 
> (not inserted into OEIS - feel free to do it)
> Best regards,
> JT
> 
> 
> 
> 
> 
> 



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