a(n)/A002939(n+1) is the Kirchhoff index of the disjoint union of two complete graphs each on n and n+1 vertices with the empty graph on n+1 vertices.

A338588

a(n)/A002939(n+1) is the Kirchhoff index of the disjoint union of two complete graphs each on n and n+1 vertices with the empty graph on n+1 vertices.

Terms

    a(0) =2a(1) =77a(2) =334a(3) =881a(4) =1826a(5) =3277a(6) =5342a(7) =8129a(8) =11746a(9) =16301a(10) =21902a(11) =28657a(12) =36674a(13) =46061a(14) =56926a(15) =69377a(16) =83522a(17) =99469a(18) =117326a(19) =137201a(20) =159202a(21) =183437a(22) =210014a(23) =239041a(24) =270626a(25) =304877a(26) =341902a(27) =381809a(28) =424706a(29) =470701

External references