a(n) = greatest number in row n of array T given by A026780.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =12a(5) =24a(6) =53a(7) =117a(8) =246a(9) =580a(10) =1178a(11) =2916a(12) =6150a(13) =14834a(14) =32656a(15) =76221a(16) =173719a(17) =395048a(18) =926664a(19) =2063104a(20) =4958556a(21) =10847078a(22) =26619438a(23) =59372770a(24) =143365880a(25) =326086492a(26) =774562478a(27) =1792293014a(28) =4197344582a(29) =9861375614