Apéry numbers: a(n) = n^2*C(2n,n).

Terms

a(0) =0a(1) =2a(2) =24a(3) =180a(4) =1120a(5) =6300a(6) =33264a(7) =168168a(8) =823680a(9) =3938220a(10) =18475600a(11) =85357272a(12) =389398464a(13) =1757701400a(14) =7862853600a(15) =34901442000a(16) =153876579840a(17) =674412197580