Number of hexagonal n-element polyominoes whose graph is a nonextensible path.
A383731
Number of hexagonal n-element polyominoes whose graph is a nonextensible path.
Terms
- a(0) =2a(1) =3a(2) =17a(3) =41a(4) =140a(5) =389a(6) =1182a(7) =3369a(8) =9817a(9) =27903a(10) =79936a(11) =226784a(12) =645730a(13) =1831574a(14) =5204271a(15) =14766828a(16) =41938778a(17) =119061270
External references
- oeis: A383731