Nearest integer to 1 / Sum_{p prime, 2^n < p <= 2^(n+1)} (Kronecker(-1/p)/p).

Terms

a(0) =2a(1) =-3a(2) =18a(3) =-71a(4) =-29a(5) =40a(6) =-57a(7) =-61a(8) =785a(9) =671a(10) =-354a(11) =2984a(12) =10869a(13) =-1374a(14) =-13678a(15) =-4224a(16) =-3217a(17) =9010a(18) =-20224a(19) =-23384a(20) =21468a(21) =-34445a(22) =-23448a(23) =165023a(24) =-466254a(25) =-146824a(26) =174689a(27) =-399880