The average of primes dividing n and n+1 is the same.

Terms

a(0) =459a(1) =2023a(2) =5063a(3) =11111a(4) =87615a(5) =92080a(6) =224720a(7) =268191a(8) =390224a(9) =524799a(10) =535601a(11) =680096a(12) =758848a(13) =1144375a(14) =1235168a(15) =1303169a(16) =1319297a(17) =1366000a(18) =1525568a(19) =2570291a(20) =2985620a(21) =3085874a(22) =3090969a(23) =3297096a(24) =4100071a(25) =4507524a(26) =5695742a(27) =5812158a(28) =5869968a(29) =6324725