Numbers k such that k +- 2 and k +- 3 are all semiprimes.

Terms

a(0) =12a(1) =36a(2) =216a(3) =540a(4) =1044a(5) =4284a(6) =6336a(7) =11304a(8) =17640a(9) =30276a(10) =31284a(11) =34056a(12) =35496a(13) =35820a(14) =37836a(15) =41796a(16) =46080a(17) =47664a(18) =50940a(19) =57240a(20) =62244a(21) =71064a(22) =75096a(23) =80856a(24) =84924a(25) =98820a(26) =100044a(27) =103536a(28) =106344a(29) =143100