Row sums of triangle A176331.

Terms

a(0) =1a(1) =2a(2) =5a(3) =16a(4) =56a(5) =202a(6) =741a(7) =2752a(8) =10318a(9) =38972a(10) =148070a(11) =565280a(12) =2166646a(13) =8332378a(14) =32136205a(15) =124249856a(16) =481433286a(17) =1868972828a(18) =7267804550a(19) =28304698336a(20) =110383060776a(21) =431000853028