Inverse binomial transform of A048775 (assuming offset zero in both sequences).

Terms

a(0) =1a(1) =6a(2) =18a(3) =48a(4) =131a(5) =363a(6) =1017a(7) =2873a(8) =8169a(9) =23349a(10) =67024a(11) =193086a(12) =557949a(13) =1616501a(14) =4694034a(15) =13657896a(16) =39809649a(17) =116218701a(18) =339762942a(19) =994553160a(20) =2914608177a(21) =8550424953a(22) =25107964077a(23) =73793368593a(24) =217057617567a(25) =638936722403