Even composites m such that A003499(m)==6 (mod m).

Terms

a(0) =4a(1) =14a(2) =28a(3) =164a(4) =434a(5) =574a(6) =1106a(7) =5084a(8) =5572a(9) =7874a(10) =8386a(11) =13454a(12) =13694a(13) =19964a(14) =21988a(15) =33166a(16) =39934a(17) =40132a(18) =95122a(19) =103886a(20) =113918a(21) =148994a(22) =157604a(23) =215326a(24) =216124a(25) =256004a(26) =277564a(27) =306404a(28) =341342a(29) =366148