Number of pairs (lambda,mu) of partitions lambda of n and mu of ceiling(n/2) with mu <= lambda (by diagram containment).

A303852

Number of pairs (lambda,mu) of partitions lambda of n and mu of ceiling(n/2) with mu <= lambda (by diagram containment).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =8a(5) =13a(6) =23a(7) =42a(8) =70a(9) =114a(10) =178a(11) =313a(12) =479a(13) =759a(14) =1119a(15) =1858a(16) =2687a(17) =4207a(18) =5960a(19) =9468a(20) =13203a(21) =20198a(22) =27728a(23) =42955a(24) =58293a(25) =87333a(26) =117084a(27) =176706a(28) =234579a(29) =346450

External references