Position of 30^n among 5-smooth numbers A051037.

Terms

a(0) =1a(1) =18a(2) =83a(3) =228a(4) =486a(5) =888a(6) =1466a(7) =2255a(8) =3283a(9) =4583a(10) =6189a(11) =8134a(12) =10445a(13) =13158a(14) =16305a(15) =19916a(16) =24027a(17) =28667a(18) =33870a(19) =39665a(20) =46086a(21) =53166a(22) =60937a(23) =69429a(24) =78675a(25) =88709a(26) =99561a(27) =111263a(28) =123849a(29) =137347