Row "sums" of Pascal triangle (A007318), using operation <+> defined in comment in A245618.

Terms

a(0) =1a(1) =2a(2) =2a(3) =2a(4) =2a(5) =22a(6) =20a(7) =28a(8) =2a(9) =494a(10) =912a(11) =1672a(12) =2376a(13) =4836a(14) =4160a(15) =4184a(16) =2a(17) =131038a(18) =261800a(19) =522272a(20) =1035804a(21) =2053288a(22) =3977272a(23) =7742352a(24) =13942968a(25) =28016020a(26) =47111040a(27) =84948528a(28) =92072064a(29) =272727022