Averages of twin prime pairs of A074378.

Terms

a(0) =18a(1) =60a(2) =138a(3) =150a(4) =1278a(5) =1620a(6) =2730a(7) =4128a(8) =6360a(9) =11718a(10) =13398a(11) =17490a(12) =20808a(13) =23028a(14) =28308a(15) =29670a(16) =51870a(17) =61380a(18) =69828a(19) =73848a(20) =78540a(21) =92568a(22) =97500a(23) =115770a(24) =138570a(25) =166668a(26) =176610a(27) =193380a(28) =200928a(29) =258318