Triangle of partial row sums (prs) of triangle A055249.

Terms

a(0) =1a(1) =4a(2) =1a(3) =13a(4) =5a(5) =1a(6) =38a(7) =18a(8) =6a(9) =1a(10) =104a(11) =56a(12) =24a(13) =7a(14) =1a(15) =272a(16) =160a(17) =80a(18) =31a(19) =8a(20) =1a(21) =688a(22) =432a(23) =240a(24) =111a(25) =39a(26) =9a(27) =1a(28) =1696a(29) =1120