Square root of A030666(n).

Terms

a(0) =4a(1) =5a(2) =6a(3) =7a(4) =23a(5) =8a(6) =27a(7) =9a(8) =30a(9) =10a(10) =34a(11) =11a(12) =37a(13) =12a(14) =39a(15) =13a(16) =42a(17) =43a(18) =14a(19) =45a(20) =46a(21) =15a(22) =48a(23) =49a(24) =16a(25) =51a(26) =52a(27) =17a(28) =54a(29) =55