Number of different figures obtained by a putting two Young diagrams of partitions lambda and mu, such that |lambda| + |mu| = n on top of each other.

A225751

Number of different figures obtained by a putting two Young diagrams of partitions lambda and mu, such that |lambda| + |mu| = n on top of each other.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =5a(4) =10a(5) =15a(6) =26a(7) =38a(8) =60a(9) =85a(10) =127a(11) =176a(12) =253a(13) =343a(14) =478a(15) =639a(16) =870a(17) =1145a(18) =1530a(19) =1990a(20) =2617a(21) =3367a(22) =4369a(23) =5568a(24) =7143a(25) =9024a(26) =11460a(27) =14369a(28) =18087a(29) =22517

External references