Number of ordered triples of involutions on [n] that pairwise commute.

A362825

Number of ordered triples of involutions on [n] that pairwise commute.

Terms

    a(0) =1a(1) =1a(2) =8a(3) =22a(4) =232a(5) =1016a(6) =12496a(7) =73648a(8) =1032032a(9) =7586272a(10) =118141696a(11) =1033672256a(12) =17668427008a(13) =178649596672

External references