Numbers m with m-1, m+1 and prime(m)+2 all prime.

Terms

a(0) =60a(1) =828a(2) =858a(3) =1032a(4) =1050a(5) =1230a(6) =1320a(7) =1878a(8) =2028a(9) =2340a(10) =3252a(11) =3390a(12) =3462a(13) =4548a(14) =5502a(15) =6870a(16) =6948a(17) =7590a(18) =7878a(19) =8010a(20) =9438a(21) =9720a(22) =9858a(23) =10038a(24) =10068a(25) =10302a(26) =11490a(27) =11718a(28) =13932a(29) =14388