Smallest positive integer requiring n syllables to pronounce in American English.

Terms

a(0) =1a(1) =7a(2) =11a(3) =27a(4) =77a(5) =111a(6) =127a(7) =177a(8) =777a(9) =1127a(10) =1177a(11) =1777a(12) =7777a(13) =11777a(14) =27777a(15) =77777a(16) =111777a(17) =127777a(18) =177777a(19) =777777a(20) =1127777a(21) =1177777a(22) =1777777a(23) =7777777a(24) =11777777a(25) =27777777a(26) =77777777a(27) =111777777a(28) =127777777a(29) =177777777