Non-crossing, non-nesting, 4-colored set partitions.

A225030

Non-crossing, non-nesting, 4-colored set partitions.

Terms

    a(0) =1a(1) =5a(2) =29a(3) =193a(4) =1441a(5) =11765a(6) =102701a(7) =941857a(8) =8955937a(9) =87439877a(10) =870218525a(11) =8780788513a(12) =89476873345a(13) =918150779957

External references