Row sums of convolution triangle A030524.

Terms

a(0) =1a(1) =7a(2) =43a(3) =250a(4) =1420a(5) =7990a(6) =44800a(7) =250900a(8) =1404700a(9) =7864000a(10) =44026000a(11) =246481000a(12) =1379950000a(13) =7725850000a(14) =43254430000a(15) =242167300000