Numbers in A075728 which are not one less than some prime.

Terms

a(0) =120a(1) =186a(2) =264a(3) =450a(4) =504a(5) =552a(6) =696a(7) =978a(8) =1208a(9) =1440a(10) =1444a(11) =1848a(12) =2034a(13) =2744a(14) =4320a(15) =4410a(16) =5376a(17) =6888a(18) =7020a(19) =9264a(20) =9968a(21) =10944a(22) =10989a(23) =13952a(24) =16080a(25) =19152a(26) =23160a(27) =29280a(28) =31410a(29) =34464