Numbers n such that 1 - S(n) = 0, where S(n) = (S(n-1) + A000040(n))*(-1)^n; S(0)=0, n=>1.

Terms

a(0) =2a(1) =4a(2) =6a(3) =8a(4) =12a(5) =14a(6) =190a(7) =194a(8) =306a(9) =308a(10) =462a(11) =464a(12) =472a(13) =474a(14) =476a(15) =478a(16) =490a(17) =1884a(18) =1890a(19) =1938a(20) =23636a(21) =23656a(22) =23850a(23) =25226a(24) =25834a(25) =25984a(26) =26642a(27) =26650a(28) =26924a(29) =26998