Low temperature antiferromagnetic susceptibility for honeycomb lattice.

Terms

a(0) =1a(1) =0a(2) =3a(3) =2a(4) =12a(5) =24a(6) =80a(7) =222a(8) =687a(9) =2096a(10) =6585a(11) =20892a(12) =67216a(13) =218412a(14) =716304a(15) =2367696a(16) =7881381a(17) =26398728a(18) =88918451a(19) =301014786a(20) =1023681792a(21) =3495786472a(22) =11983194420a(23) =41220422022a(24) =142247592803a(25) =492339048156