Row sums of triangle A049410.

Terms

a(0) =1a(1) =1a(2) =4a(3) =16a(4) =76a(5) =436a(6) =2776a(7) =19384a(8) =148576a(9) =1226656a(10) =10824256a(11) =101695936a(12) =1010783104a(13) =10577428096a(14) =116166090496