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# User talk:Reinhard Zumkeller

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FYI

Perhaps then you could also relate A251621 with A153143 in some kind of formula of the same sort ...

Alexander R. Povolotsky

On Dec 11, 2014, at 2:00 AM, Vladimir Shevelev <shevelev@bgu.ac.il> wrote: [seqfan] Re: A098550.

Finally, we have an explicit conjectural formula for prime(n), n>=8, based on A098550 and simple operations (A098550->A249943 -> A251621) : prime(n) = 19 + sum{i=9,...,n}A251621(i+4), n=8,9,... (as always, sum{a,...,b}=0, if b<a).

Best regards, Vladimir