Partial sums of A077482.

Terms

a(0) =1a(1) =3a(2) =14a(3) =39a(4) =134a(5) =362a(6) =1114a(7) =2974a(8) =8715a(9) =23192a(10) =66131a(11) =175889a(12) =493036a(13) =1311265a(14) =3633777a(15) =9664070a(16) =26564611a(17) =70644166a(18) =193023433a(19) =513251110a(20) =1395938840a(21) =3711196199a(22) =10057272214a(23) =26732694893a(24) =72234863272a(25) =191962874523a(26) =517473126631