Positions of records in A188169.

Terms

a(0) =1a(1) =9a(2) =81a(3) =153a(4) =891a(5) =1377a(6) =3825a(7) =11025a(8) =15147a(9) =31977a(10) =95931a(11) =187425a(12) =287793a(13) =675675a(14) =1091475a(15) =1576575a(16) =1686825a(17) =2027025a(18) =2297295a(19) =3828825a(20) =6185025a(21) =11486475a(22) =18555075a(23) =26801775a(24) =34459425a(25) =43648605a(26) =72747675a(27) =117515475a(28) =218243025a(29) =352546425