a(n) is the largest number in the n-th row of triangle A140996.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =16a(6) =31a(7) =60a(8) =116a(9) =224a(10) =432a(11) =833a(12) =1606a(13) =3096a(14) =5968a(15) =11504a(16) =22175a(17) =42744a(18) =84752a(19) =169880a(20) =340013a(21) =679604a(22) =1356641a(23) =2704954a(24) =5387340a(25) =10718620a(26) =21304973a(27) =42308331a(28) =83945336a(29) =166423276