Wiener index of the Moebius ladder M(n).

Terms

a(0) =1a(1) =6a(2) =21a(3) =44a(4) =85a(5) =138a(6) =217a(7) =312a(8) =441a(9) =590a(10) =781a(11) =996a(12) =1261a(13) =1554a(14) =1905a(15) =2288a(16) =2737a(17) =3222a(18) =3781a(19) =4380a(20) =5061a(21) =5786a(22) =6601a(23) =7464a(24) =8425a(25) =9438a(26) =10557a(27) =11732a(28) =13021a(29) =14370