[seqfan] A147615

Don Reble djr at nk.ca
Thu Mar 24 15:13:11 CET 2016


> %N A036570 Primes p such that (p+1)/2 and (p+2)/3 are also prime.
> %C A147615 Are there infinitely many terms in the intersection of this
>            sequence and A036570?

    No: after the ninth term, all A147615 values are multiples of 13.

    (BTW, A036570 should ref A074200, A093553.)

-- 
Don Reble  djr at nk.ca




More information about the SeqFan mailing list