Number of cliques in the n-triangular honeycomb queen graph.

Terms

a(0) =2a(1) =8a(2) =27a(3) =72a(4) =169a(5) =367a(6) =764a(7) =1553a(8) =3120a(9) =6234a(10) =12433a(11) =24790a(12) =49451a(13) =98705a(14) =197130a(15) =393879a(16) =787258a(17) =1573876a(18) =3146951a(19) =6292916a(20) =12584637a(21) =25167843a(22) =50333992a(23) =100665997a(24) =201329684a(25) =402656702a(26) =805310349a(27) =1610617218a(28) =3221230495a(29) =6442456549