Row sums of A296664.

Terms

a(0) =1a(1) =1a(2) =4a(3) =7a(4) =20a(5) =38a(6) =96a(7) =187a(8) =444a(9) =874a(10) =2000a(11) =3958a(12) =8840a(13) =17548a(14) =38528a(15) =76627a(16) =166124a(17) =330818a(18) =710256a(19) =1415650a(20) =3016056a(21) =6015316a(22) =12736064a(23) =25413342a(24) =53530840a(25) =106853668a(26) =224107936a(27) =447472972a(28) =935062544a(29) =1867450648