Cluster series for bond percolation problem on honeycomb.

Terms

a(0) =1a(1) =4a(2) =8a(3) =16a(4) =32a(5) =54a(6) =100a(7) =182a(8) =328a(9) =494a(10) =984a(11) =1572a(12) =2656a(13) =4212a(14) =8162a(15) =11176a(16) =21704a(17) =30994a(18) =60548