Number of planar partitions of n, when partitions that are rotations of each other (when regarded as 3-D objects) are counted only once.

A048139

Number of planar partitions of n, when partitions that are rotations of each other (when regarded as 3-D objects) are counted only once.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =8a(5) =16a(6) =30a(7) =54a(8) =94a(9) =168a(10) =287a(11) =493a(12) =831a(13) =1391a(14) =2293a(15) =3769a(16) =6114a(17) =9867a(18) =15782a(19) =25098a(20) =39598a(21) =62165a(22) =96935a(23) =150398a(24) =232021a(25) =356261a(26) =544220a(27) =827758a(28) =1253222a(29) =1889655

External references