Numbers n such that n is both the average of some twin prime pair p, q (q = p+2) (i.e., n = p+1 = q-1) and is also the arithmetic mean of the four numbers consisting of the two primes before p and the two primes after q.
A256620
Numbers n such that n is both the average of some twin prime pair p, q (q = p+2) (i.e., n = p+1 = q-1) and is also the arithmetic mean of the four numbers consisting of the two primes before p and the two primes after q.
Terms
- a(0) =12a(1) =30a(2) =42a(3) =312a(4) =600a(5) =858a(6) =1032a(7) =1290a(8) =1698a(9) =2112a(10) =2688a(11) =3768a(12) =4218a(13) =4230a(14) =4260a(15) =5850a(16) =6132a(17) =6552a(18) =6702a(19) =7212a(20) =7308a(21) =8292a(22) =9420a(23) =9930a(24) =11970a(25) =12042a(26) =12378a(27) =15972a(28) =17190a(29) =17598
External references
- oeis: A256620