Number of Level 3 hexagonal polyominoes with cheesy blocks and n cells.

A167013

Number of Level 3 hexagonal polyominoes with cheesy blocks and n cells.

Terms

    a(0) =1a(1) =3a(2) =11a(3) =44a(4) =186a(5) =812a(6) =3614a(7) =16259a(8) =73558a(9) =333683a(10) =1515454a(11) =6885303a(12) =31283654a(13) =142121322a(14) =645545957a(15) =2931714681a(16) =13312277095a(17) =60440946141a(18) =274391188445

External references