Number of compositions of n where the difference between largest and smallest parts equals eight.

Terms

a(0) =0a(1) =0a(2) =2a(3) =3a(4) =12a(5) =23a(6) =61a(7) =135a(8) =306a(9) =679a(10) =1499a(11) =3254a(12) =7041a(13) =15127a(14) =32321a(15) =68745a(16) =145654a(17) =307507a(18) =647246a(19) =1358592a(20) =2844722a(21) =5943310a(22) =12392127a(23) =25790949a(24) =53587142a(25) =111169216a(26) =230298492a(27) =476459514a(28) =984532396a(29) =2032073964