Rooted labeled Ptolemaic graphs on n nodes.

A287885

Rooted labeled Ptolemaic graphs on n nodes.

Terms

    a(0) =1a(1) =2a(2) =12a(3) =140a(4) =2405a(5) =54252a(6) =1512539a(7) =50168456a(8) =1928240622a(9) =84240029730

External references