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User talk:M. F. Hasler/drafts/A171253

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Axxx : Largest members of decadal prime triplets

Note: this is not the talk page for sequence A171253 (Semi-sums (average) of any two distinct Mersenne primes (A000668)), but what I planned to submit with that A-number during the OEIS migration in 2010.

But this sequence has a slight conceptual problem if defined as "largest member of decadal prime triplets", (possibly requiring repetition in case of decadal prime quadruplets), so we rather define it as:

The largest prime in each decade (10k,10k+10) containing at least three primes. 


t=primepi(10); for(d=2,999,(2+o=t)< (t=primepi(10*d) && print1(precprime(d*10)","))