Row sums of array T in A053199.

Terms

a(0) =1a(1) =5a(2) =22a(3) =92a(4) =372a(5) =1468a(6) =5688a(7) =21728a(8) =82064a(9) =307088a(10) =1140320a(11) =4206912a(12) =15434048a(13) =56350912a(14) =204875648a(15) =742104064a(16) =2679197952a(17) =9644109056a(18) =34623075840a(19) =124001176576a(20) =443136848896