Number of independent vertex sets in the n-Andrásfai graph.

Terms

a(0) =3a(1) =11a(2) =33a(3) =89a(4) =225a(5) =545a(6) =1281a(7) =2945a(8) =6657a(9) =14849a(10) =32769a(11) =71681a(12) =155649a(13) =335873a(14) =720897a(15) =1540097a(16) =3276801a(17) =6946817a(18) =14680065a(19) =30932993a(20) =65011713a(21) =136314881a(22) =285212673a(23) =595591169a(24) =1241513985a(25) =2583691265a(26) =5368709121a(27) =11140071425a(28) =23085449217a(29) =47781511169