Number of compositions of 3n in which the minimal multiplicity of parts equals n.

A244174

Number of compositions of 3n in which the minimal multiplicity of parts equals n.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =21a(4) =71a(5) =253a(6) =925a(7) =3433a(8) =12871a(9) =48621a(10) =184757a(11) =705433a(12) =2704157a(13) =10400601a(14) =40116601a(15) =155117521a(16) =601080391a(17) =2333606221a(18) =9075135301a(19) =35345263801a(20) =137846528821a(21) =538257874441

External references