Number of compositions of n whose set of distinct parts is pairwise coprime, where a singleton is always considered coprime.

A337664

Number of compositions of n whose set of distinct parts is pairwise coprime, where a singleton is always considered coprime.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =16a(6) =30a(7) =58a(8) =111a(9) =210a(10) =396a(11) =750a(12) =1420a(13) =2688a(14) =5079a(15) =9586a(16) =18092a(17) =34157a(18) =64516a(19) =121899a(20) =230373a(21) =435463a(22) =823379a(23) =1557421a(24) =2946938a(25) =5578111a(26) =10561990a(27) =20005129a(28) =37902514a(29) =71832373

External references