Triangle read by rows: the k-th entry of row n is the number of particular connectivity requirements that a k-linked graph with n >= 2k vertices has to satisfy T(n,k) = (1/2) * n!/(k!*(n-2*k)!) where k runs from 1 to floor(n/2).
A135610
Triangle read by rows: the k-th entry of row n is the number of particular connectivity requirements that a k-linked graph with n >= 2k vertices has to satisfy T(n,k) = (1/2) * n!/(k!*(n-2*k)!) where k runs from 1 to floor(n/2).
Terms
- a(0) =1a(1) =3a(2) =6a(3) =6a(4) =10a(5) =30a(6) =15a(7) =90a(8) =60a(9) =21a(10) =210a(11) =420a(12) =28a(13) =420a(14) =1680a(15) =840a(16) =36a(17) =756a(18) =5040a(19) =7560a(20) =45a(21) =1260a(22) =12600a(23) =37800a(24) =15120a(25) =55a(26) =1980a(27) =27720a(28) =138600a(29) =166320
External references
- oeis: A135610