The sum of the sizes of the minimal fixed points over all compositions of n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =12a(5) =27a(6) =54a(7) =115a(8) =237a(9) =486a(10) =997a(11) =2030a(12) =4122a(13) =8350a(14) =16881a(15) =34054a(16) =68609a(17) =138052a(18) =277500a(19) =557328a(20) =1118546a(21) =2243589a(22) =4498004a(23) =9014053a(24) =18058159a(25) =36166338a(26) =72415886a(27) =144970116a(28) =290170091a(29) =580721926