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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
A023402
Please look at a conjecture you added to A023402 a long time ago. J. Lowell (talk) 13:36, 15 November 2020 (EST)