Row sums of A092821.

Terms

a(0) =1a(1) =3a(2) =10a(3) =32a(4) =100a(5) =312a(6) =988a(7) =3208a(8) =10728a(9) =36944a(10) =130604a(11) =471880a(12) =1734616a(13) =6461808a(14) =24317080a(15) =92222288a(16) =351854032a(17) =1348762016a(18) =5189792716a(19) =20031335240a(20) =77516440696a(21) =300630949424