Total number of largest parts in all compositions of n.

Terms

a(0) =1a(1) =3a(2) =6a(3) =12a(4) =23a(5) =46a(6) =91a(7) =183a(8) =367a(9) =737a(10) =1478a(11) =2962a(12) =5928a(13) =11858a(14) =23707a(15) =47384a(16) =94698a(17) =189260a(18) =378277a(19) =756160a(20) =1511730a(21) =3022672a(22) =6044472a(23) =12088395a(24) =24177600a(25) =48359695a(26) =96732370a(27) =193495606a(28) =387057584a(29) =774248858