Number of maximum independent vertex sets in the n-triangular honeycomb queen graph.

Terms

a(0) =1a(1) =3a(2) =3a(3) =2a(4) =23a(5) =18a(6) =6a(7) =270a(8) =166a(9) =28a(10) =4842a(11) =2532a(12) =244a(13) =120052a(14) =49620a(15) =2544a(16) =3852972a(17) =1270832a(18) =35600a(19) =156145080a(20) =40668960a(21) =659632a(22) =7746956424a(23) =1606984224a(24) =15106128a(25) =460265296128a(26) =75930070688a(27) =425802176