Convolution of Bell and Catalan numbers.

Terms

a(0) =1a(1) =2a(2) =5a(3) =14a(4) =43a(5) =143a(6) =512a(7) =1974a(8) =8226a(9) =37224a(10) =183456a(11) =984098a(12) =5719900a(13) =35767592a(14) =238720688a(15) =1688044543a(16) =12568879291a(17) =98065500372a(18) =798734909795