The hyper-Wiener index of the Cartesian product of the cycles C(n) and C(n) (a Torus Grid Graph).

Terms

a(0) =0a(1) =10a(2) =72a(3) =448a(4) =1450a(5) =4482a(6) =10388a(7) =23552a(8) =45360a(9) =86250a(10) =147620a(11) =250560a(12) =395122a(13) =619458a(14) =919800a(15) =1359872a(16) =1928208a(17) =2725002a(18) =3725520a(19) =5080000a(20) =6742890a(21) =8931010a(22) =11568172a(23) =14957568a(24) =18980000a(25) =24048362a(26) =29985228a(27) =37340352a(28) =45859730a(29) =56261250