The radical of the Catalan number which is the largest squarefree number dividing binomial(2*n,n)/(n+1).
A281594
The radical of the Catalan number which is the largest squarefree number dividing binomial(2*n,n)/(n+1).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =42a(6) =66a(7) =429a(8) =1430a(9) =4862a(10) =8398a(11) =58786a(12) =104006a(13) =74290a(14) =222870a(15) =3231615a(16) =11785890a(17) =129644790a(18) =47763870a(19) =1767263190a(20) =3282060210a(21) =12233133510a(22) =22870640910a(23) =22870640910a(24) =214984024554a(25) =115760628606a(26) =655976895434
External references
- oeis: A281594