a(n) = k where wt(k) = n and k + wt(k) = a power of two, where wt(n) = A000120(n) = binary weight of n.

A374348

a(n) = k where wt(k) = n and k + wt(k) = a power of two, where wt(n) = A000120(n) = binary weight of n.

Terms

    a(0) =1a(1) =6a(2) =13a(3) =60a(4) =59a(5) =250a(6) =505a(7) =2040a(8) =1015a(9) =4086a(10) =8181a(11) =32756a(12) =32755a(13) =131058a(14) =262129a(15) =1048560a(16) =262127a(17) =1048558a(18) =2097133a(19) =8388588a(20) =8388587a(21) =33554410a(22) =67108841a(23) =268435432a(24) =134217703a(25) =536870886a(26) =1073741797a(27) =4294967268a(28) =4294967267a(29) =17179869154

External references