Least k such that A205592(k) = 2^n.

Terms

a(0) =2a(1) =5a(2) =8a(3) =20a(4) =44a(5) =71a(6) =107a(7) =161a(8) =242a(9) =545a(10) =818a(11) =1841a(12) =2762a(13) =6215a(14) =9323a(15) =13985a(16) =20978a(17) =47201a(18) =70802a(19) =159305a(20) =238958a(21) =358910a(22) =807548a(23) =1814615a(24) =2721923a(25) =4082885a(26) =6124328a(27) =13779557a(28) =20669336a(29) =40222412