Number of three-choice polygons by area.

Terms

a(0) =4a(1) =12a(2) =34a(3) =96a(4) =262a(5) =706a(6) =1866a(7) =4876a(8) =12590a(9) =32220a(10) =81780a(11) =206182a(12) =516682a(13) =1288100a(14) =3196414a(15) =7899664a(16) =19452002a(17) =47741832a(18) =116827972a(19) =285121530a(20) =694145540a(21) =1686165640a(22) =4087501476a(23) =9889956114a(24) =23887544730a(25) =57602999360a(26) =138696210062a(27) =333483756402a(28) =800784138674