Row sum of column n in A126441 or A161924.

Terms

a(0) =1a(1) =5a(2) =16a(3) =49a(4) =129a(5) =341a(6) =833a(7) =2029a(8) =4760a(9) =11068a(10) =25182a(11) =56888a(12) =126661a(13) =280169a(14) =613893a(15) =1337386a(16) =2893793a(17) =6232013a(18) =13352607a(19) =28497552a(20) =60580905a(21) =128368080a(22) =271153740a(23) =571224871a(24) =1200298631a(25) =2516483260a(26) =5264785310a(27) =10993631034a(28) =22915508186a(29) =47688470005