Numbers beginning with a vowel in English.

Terms

a(0) =1a(1) =8a(2) =11a(3) =18a(4) =80a(5) =81a(6) =82a(7) =83a(8) =84a(9) =85a(10) =86a(11) =87a(12) =88a(13) =89a(14) =100a(15) =101a(16) =102a(17) =103a(18) =104a(19) =105a(20) =106a(21) =107a(22) =108a(23) =109a(24) =110a(25) =111a(26) =112a(27) =113a(28) =114a(29) =115