Number of compositions of n having exactly five fixed points.

A240740

Number of compositions of n having exactly five fixed points.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =7a(4) =16a(5) =35a(6) =70a(7) =155a(8) =321a(9) =665a(10) =1368a(11) =2802a(12) =5711a(13) =11623a(14) =23526a(15) =47567a(16) =95967a(17) =193316a(18) =388893a(19) =781519a(20) =1569154a(21) =3148292a(22) =6313052a(23) =12652917a(24) =25349663a(25) =50770869a(26) =101658425a(27) =203506976a(28) =407323589a(29) =815151106

External references