Powers of cube root of 23 rounded up.

Terms

a(0) =1a(1) =3a(2) =9a(3) =23a(4) =66a(5) =187a(6) =529a(7) =1505a(8) =4279a(9) =12167a(10) =34602a(11) =98402a(12) =279841a(13) =795831a(14) =2263237a(15) =6436343a(16) =18304104a(17) =52054436a(18) =148035889a(19) =420994377a(20) =1197252007a(21) =3404825447a(22) =9682870661a(23) =27536796143a(24) =78310985281a(25) =222706025201a(26) =633346311282