Limit of rows in rectangular array A292929.

Terms

a(0) =2a(1) =-4a(2) =8a(3) =-12a(4) =24a(5) =-32a(6) =64a(7) =-68a(8) =152a(9) =-120a(10) =392a(11) =-124a(12) =1000a(13) =320a(14) =3056a(15) =2836a(16) =10280a(17) =15112a(18) =38668a(19) =68348a(20) =154152a(21) =297948a(22) =633352a(23) =1269884a(24) =2649892a(25) =5395272a(26) =11157512a(27) =22890976a(28) =47251564a(29) =97224304