Where zeros occur in A065806.

Terms

a(0) =2a(1) =4a(2) =8a(3) =17a(4) =39a(5) =43a(6) =799a(7) =823a(8) =1127a(9) =1136a(10) =1575a(11) =1822a(12) =3114a(13) =4926a(14) =7576a(15) =18574a(16) =137489a(17) =1058844a(18) =1246046a(19) =1426980a(20) =1852845a(21) =2147772a(22) =5524211a(23) =15583147a(24) =29390514a(25) =587075283