Molecular topological indices of the path graphs P_n.

Terms

a(0) =0a(1) =4a(2) =16a(3) =38a(4) =74a(5) =128a(6) =204a(7) =306a(8) =438a(9) =604a(10) =808a(11) =1054a(12) =1346a(13) =1688a(14) =2084a(15) =2538a(16) =3054a(17) =3636a(18) =4288a(19) =5014a(20) =5818a(21) =6704a(22) =7676a(23) =8738a(24) =9894a(25) =11148a(26) =12504a(27) =13966a(28) =15538a(29) =17224