A073077 Numbers n such that n divides C(2n,n) and C(4n,2n).

1, 2, 20, 110, 156, 210, 220, 238, 240, 312, 460, 468, 483, 510, 561, 600, 624, 665, 684, 696, 720, 744, 770, 806, 812, 816, 868, 936, 966, 1001, 1012, 1045, 1064, 1100, 1110, 1122, 1144, 1155, 1170, 1200