Number of strict compositions of n that are neither unimodal nor is their negation.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =10a(11) =10a(12) =20a(13) =30a(14) =50a(15) =150a(16) =180a(17) =290a(18) =420a(19) =630a(20) =860a(21) =1828a(22) =2168a(23) =3326a(24) =4514a(25) =6530a(26) =8576a(27) =12188a(28) =20096a(29) =25314