a(n) = smallest value of k such that n*k^(1/n) >= (n+1)*k^(1/(n+1)).

Terms

a(0) =4a(1) =12a(2) =32a(3) =87a(4) =238a(5) =649a(6) =1769a(7) =4820a(8) =13128a(9) =35744a(10) =97295a(11) =264783a(12) =720465a(13) =1960095a(14) =5332044a(15) =14503451a(16) =39447240a(17) =107283957a(18) =291762849a(19) =793424505a(20) =2157567407a(21) =5866897880a(22) =15952911029a(23) =43377066302a(24) =117942558396a(25) =320680213521