Number of compositions of n with exactly 7 transitions between different parts.

Terms

a(0) =2a(1) =22a(2) =136a(3) =618a(4) =2278a(5) =7180a(6) =20140a(7) =51100a(8) =120046a(9) =263192a(10) =545644a(11) =1075414a(12) =2031190a(13) =3690972a(14) =6485546a(15) =11052982a(16) =18333194a(17) =29664162a(18) =46934548a(19) =72757550a(20) =110684340a(21) =165506866a(22) =243561442a(23) =353198516a(24) =505188930a(25) =713484770a(26) =995688310a(27) =1374225240a(28) =1876917926