Starts of runs of 5 consecutive even numbers that are all totient numbers (A002202).

Terms

a(0) =2a(1) =4a(2) =16a(3) =40a(4) =52a(5) =100a(6) =102a(7) =104a(8) =160a(9) =220a(10) =460a(11) =498a(12) =500a(13) =856a(14) =880a(15) =1276a(16) =1480a(17) =1660a(18) =1804a(19) =2200a(20) =2236a(21) =3016a(22) =3160a(23) =3460a(24) =4516a(25) =4780a(26) =5500a(27) =5920a(28) =6040a(29) =6196