Smallest k such that the number of the first even exponents in prime power factorization of (2*k)! is n, or a(n)=0 if there is no such k.

A241786

Smallest k such that the number of the first even exponents in prime power factorization of (2*k)! is n, or a(n)=0 if there is no such k.

Terms

    a(0) =1a(1) =6a(2) =3a(3) =5a(4) =10a(5) =24a(6) =27a(7) =169a(8) =924a(9) =3168a(10) =720a(11) =3208a(12) =408a(13) =35421a(14) =50878a(15) =73920a(16) =18757a(17) =204513a(18) =134418a(19) =295680a(20) =427684a(21) =2746710a(22) =6867848a(23) =14476645a(24) =7278558a(25) =3668406a(26) =737564a(27) =245340483a(28) =1931850660a(29) =1514239096

External references