Midpoints k of a pair of twin primes such that sigma(k) is also the midpoint of a pair of twin primes.
A349981
Midpoints k of a pair of twin primes such that sigma(k) is also the midpoint of a pair of twin primes.
Terms
- a(0) =6a(1) =30a(2) =462a(3) =1062a(4) =1290a(5) =1482a(6) =1878a(7) =2088a(8) =2790a(9) =3558a(10) =4272a(11) =4338a(12) =6552a(13) =6660a(14) =7308a(15) =8010a(16) =8598a(17) =8820a(18) =10038a(19) =10428a(20) =10530a(21) =10890a(22) =11940a(23) =12042a(24) =12918a(25) =13338a(26) =13758a(27) =16980a(28) =17418a(29) =17580
External references
- oeis: A349981