Number of compositions of n having exactly six fixed points.

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =16a(5) =35a(6) =76a(7) =155a(8) =334a(9) =691a(10) =1427a(11) =2928a(12) =5985a(13) =12181a(14) =24718a(15) =50052a(16) =101060a(17) =203767a(18) =410240a(19) =824943a(20) =1657225a(21) =3326530a(22) =6672880a(23) =13378262a(24) =26809661a(25) =53706442a(26) =107555030a(27) =215342201a(28) =431063039a(29) =862743300