OFFSET
1,2
COMMENTS
6*a(n)-1, 6*a(n)+1 are twin primes such that the prime gap immediately preceding 6*a(n)-1 sets a record. The corresponding gap lengths are provided in A329159.
PROG
(PARI) p1=3; p2=5; r=0; forprime(p3=7, 1e9, if(p3-p2==2, d=p2-p1; if(d>r, r=d; print1((p2+p3)/12, ", "))); p1=p2; p2=p3)
CROSSREFS
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Nov 06 2019
STATUS
approved