Triangle read by rows where T(n,k) is the number of labeled simple connected graphs with n vertices and exactly k bridges.
A327072
Triangle read by rows where T(n,k) is the number of labeled simple connected graphs with n vertices and exactly k bridges.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =0a(4) =1a(5) =0a(6) =1a(7) =0a(8) =3a(9) =0a(10) =10a(11) =12a(12) =0a(13) =16a(14) =0a(15) =253a(16) =200a(17) =150a(18) =0a(19) =125a(20) =0a(21) =11968a(22) =7680a(23) =3600a(24) =2160a(25) =0a(26) =1296a(27) =0a(28) =1047613a(29) =506856
External references
- oeis: A327072