a(n) = T(2n,n), where T is the array defined in A025177.
A025184
a(n) = T(2n,n), where T is the array defined in A025177.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =35a(4) =189a(5) =1038a(6) =5797a(7) =32747a(8) =186615a(9) =1070762a(10) =6177698a(11) =35802935a(12) =208279007a(13) =1215507450a(14) =7113090285a(15) =41724381765a(16) =245258504925
External references
- oeis: A025184