A329159 2*a(n) are the lengths of record prime gaps immediately preceding twin primes.

1, 2, 3, 5, 6, 11, 14, 15, 17, 20, 24, 26, 30, 35, 39, 42, 45, 50, 66, 68, 74, 75, 89, 98, 104, 107, 117, 123, 144, 159, 165, 180, 183, 192, 195

Offset: 1

Author

Hugo Pfoertner, Nov 06 2019

Keywords

• nonn
• more

Comments

The corresponding locations are provided in A329158. The gap 2 -> 3 before the pair 3, 5 is excluded.

Crossrefs

Cf. A329158, A329160, A329161, A329164, A329165.

Programs

PARI

p1=3;p2=5;r=0;forprime(p3=7,1e9,if(p3-p2==2,d=p2-p1;if(d>r,r=d;print1(d/2,", ")));p1=p2;p2=p3)

Extensions

a(31)-a(34) from Jinyuan Wang, Mar 01 2020

a(35) from David Trimas, Jul 26 2023