Noncrossing set partition version of A102356.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =6a(5) =10a(6) =30a(7) =105a(8) =280a(9) =756a(10) =2520a(11) =6930a(12) =18480a(13) =60060a(14) =180180a(15) =675675a(16) =2162160a(17) =6806800a(18) =24504480a(19) =77597520a(20) =232792560a(21) =888844320a(22) =3259095840a(23) =10708457760a(24) =37479602160a(25) =133855722000a(26) =435031096500