Number of narrowly totally normal compositions of n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =5a(5) =7a(6) =13a(7) =23a(8) =30a(9) =63a(10) =120a(11) =209a(12) =369a(13) =651a(14) =1198a(15) =2174a(16) =3896a(17) =7023a(18) =12699a(19) =22941a(20) =41565