Sum of the asymmetry degrees of all compositions of n with parts in {1,2,3}.

Terms

a(0) =0a(1) =0a(2) =0a(3) =2a(4) =4a(5) =10a(6) =22a(7) =50a(8) =106a(9) =222a(10) =458a(11) =936a(12) =1890a(13) =3788a(14) =7540a(15) =14924a(16) =29388a(17) =57620a(18) =112540a(19) =219062a(20) =425112a(21) =822726a(22) =1588314a(23) =3059470a(24) =5881254a(25) =11284514a(26) =21614774a(27) =41336300a(28) =78936358a(29) =150533496