Least early bird number of order n.

Terms

a(0) =12a(1) =99a(2) =212a(3) =221a(4) =1532a(5) =2211a(6) =4221a(7) =12111a(8) =21111a(9) =22211a(10) =42221a(11) =111107a(12) =121111a(13) =211111a(14) =222216a(15) =878777a(16) =1111102a(17) =1121111a(18) =1211111a(19) =2111111a(20) =4332343a(21) =9999993a(22) =11111051a(23) =11111106a(24) =11211111a(25) =12111111a(26) =21111111