Semiprimes with even digits.

Terms

a(0) =4a(1) =6a(2) =22a(3) =26a(4) =46a(5) =62a(6) =82a(7) =86a(8) =202a(9) =206a(10) =226a(11) =262a(12) =422a(13) =446a(14) =466a(15) =482a(16) =622a(17) =626a(18) =662a(19) =802a(20) =842a(21) =862a(22) =866a(23) =886a(24) =2026a(25) =2042a(26) =2062a(27) =2066a(28) =2206a(29) =2246