Even numbers k such that the central binomial coefficient A000984(k, k/2) is divisible by k^2.

Terms

a(0) =1848a(1) =2574a(2) =4004a(3) =4290a(4) =6732a(5) =7480a(6) =8398a(7) =12012a(8) =12236a(9) =17710a(10) =20930a(11) =22770a(12) =24570a(13) =24650a(14) =24882a(15) =25080a(16) =25194a(17) =26796a(18) =27132a(19) =30160a(20) =31668a(21) =36540a(22) =36708a(23) =37674a(24) =37944a(25) =38454a(26) =47124a(27) =47740a(28) =51282a(29) =51480