Least integer b > F(n) such that sum_{k=1}^n F(k)*b^{k-1} is prime, where F = A000045.

Terms

a(0) =2a(1) =4a(2) =4a(3) =6a(4) =10a(5) =39a(6) =102a(7) =44a(8) =165a(9) =96a(10) =154a(11) =446a(12) =406a(13) =714a(14) =999a(15) =1634a(16) =2698a(17) =5445a(18) =7630a(19) =11670a(20) =17833a(21) =28758a(22) =46686a(23) =75178a(24) =121782a(25) =197890a(26) =319081a(27) =522734a(28) =840924