The Wiener index of the P_3 X P_n grid, where P_m is the path graph on m nodes. The Wiener index of a connected graph is the sum of distances between all unordered pairs of nodes in the graph.
A180569
The Wiener index of the P_3 X P_n grid, where P_m is the path graph on m nodes. The Wiener index of a connected graph is the sum of distances between all unordered pairs of nodes in the graph.
Terms
- a(0) =4a(1) =25a(2) =72a(3) =154a(4) =280a(5) =459a(6) =700a(7) =1012a(8) =1404a(9) =1885a(10) =2464a(11) =3150a(12) =3952a(13) =4879a(14) =5940a(15) =7144a(16) =8500a(17) =10017a(18) =11704a(19) =13570a(20) =15624a(21) =17875a(22) =20332a(23) =23004a(24) =25900a(25) =29029a(26) =32400a(27) =36022a(28) =39904a(29) =44055
External references
- oeis: A180569