Unbranched a-4-catapolynonagons (see Brunvoll reference for precise definition).

A121125

Unbranched a-4-catapolynonagons (see Brunvoll reference for precise definition).

Terms

    a(0) =1a(1) =4a(2) =19a(3) =123a(4) =834a(5) =5796a(6) =40014a(7) =274590a(8) =1867320a(9) =12600360a(10) =84407832a(11) =561852936a(12) =3718716480a(13) =24488941248a(14) =160538000544

External references