a(n) = greatest number in row n of array T given by A026998.

Terms

a(0) =1a(1) =1a(2) =4a(3) =8a(4) =13a(5) =26a(6) =54a(7) =101a(8) =174a(9) =370a(10) =743a(11) =1397a(12) =2552a(13) =5353a(14) =10636a(15) =20120a(16) =38138a(17) =78753a(18) =155793a(19) =296248a(20) =573382a(21) =1173183a(22) =2316317a(23) =4423690a(24) =8673078a(25) =17641499a(26) =34801731a(27) =66705394a(28) =131894869a(29) =267203186