Number of compositions of 2n such that the largest multiplicity of parts equals n.
A232665
Number of compositions of 2n such that the largest multiplicity of parts equals n.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =5a(4) =21a(5) =49a(6) =176a(7) =513a(8) =1720a(9) =5401a(10) =17777a(11) =57421a(12) =188657a(13) =617177a(14) =2033176a(15) =6697745a(16) =22139781a(17) =73262233a(18) =242931322a(19) =806516561a(20) =2681475049a(21) =8925158441a(22) =29740390673a(23) =99196158145a(24) =331163178476
External references
- oeis: A232665