Number of n-digit 9th powers.

Terms

a(0) =2a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =1a(7) =2a(8) =2a(9) =3a(10) =4a(11) =5a(12) =6a(13) =8a(14) =11a(15) =13a(16) =18a(17) =22a(18) =30a(19) =37a(20) =49a(21) =63a(22) =81a(23) =105a(24) =135a(25) =175a(26) =225a(27) =292a(28) =377a(29) =486