Number of aperiodic compositions of n where every pair of adjacent parts (including the last with the first) is relatively prime.

A328670

Number of aperiodic compositions of n where every pair of adjacent parts (including the last with the first) is relatively prime.

Terms

    a(0) =1a(1) =0a(2) =2a(3) =5a(4) =11a(5) =20a(6) =41a(7) =75a(8) =147a(9) =272a(10) =533a(11) =976a(12) =1881a(13) =3490a(14) =6616a(15) =12378a(16) =23405a(17) =43781a(18) =82536a(19) =154709a(20) =291043a(21) =546139a(22) =1026685a(23) =1927038a(24) =3621004a(25) =6798417a(26) =12770935a(27) =23980791a(28) =45042957a(29) =84584416

External references