Graham-Pollak sequence with initial term 5.

Terms

a(0) =5a(1) =7a(2) =10a(3) =14a(4) =20a(5) =28a(6) =40a(7) =57a(8) =81a(9) =115a(10) =163a(11) =231a(12) =327a(13) =463a(14) =655a(15) =927a(16) =1311a(17) =1854a(18) =2622a(19) =3708a(20) =5244a(21) =7416a(22) =10488a(23) =14832a(24) =20976a(25) =29665a(26) =41953a(27) =59331a(28) =83907a(29) =118663