Number of isogons with a certain property.

A107350

Number of isogons with a certain property.

Terms

    a(0) =1a(1) =4a(2) =34a(3) =346a(4) =3965a(5) =48396a(6) =615966a(7) =8082457a(8) =108545916a(9) =1484716135a(10) =20612084010a(11) =289688970195

External references