Number of matchings (not necessarily perfect) in the triangle graph of order n.
A269869
Number of matchings (not necessarily perfect) in the triangle graph of order n.
Terms
- a(0) =1a(1) =4a(2) =27a(3) =425a(4) =14278a(5) =1054396a(6) =169858667a(7) =59811185171
External references
- oeis: A269869