a(n) = T(2n,n-1), where T is the array defined in A025564.
A025573
a(n) = T(2n,n-1), where T is the array defined in A025564.
Terms
- a(0) =1a(1) =4a(2) =19a(3) =98a(4) =526a(5) =2892a(6) =16159a(7) =91338a(8) =520794a(9) =2989688a(10) =17256275a(11) =100046894a(12) =582204290a(13) =3398722420a(14) =19894375665a(15) =116724946350a(16) =686260868346
External references
- oeis: A025573