A251075 Number of tilings of a 18 X n rectangle using 3n hexominoes of shape I.

1, 1, 1, 1, 1, 1, 43, 117, 229, 385, 591, 853, 5789, 17163, 40521, 84211, 160143, 284639, 945352, 2743255, 7017326, 16250983, 34801374, 69959957, 179843441, 479965811, 1238082783, 3015746329, 6925030997, 15065972891, 35869626723, 89673470947, 226122534275

Offset

0,7

Links

Alois P. Heinz, Table of n, a(n) for n = 0..1000

Wikipedia, Hexomino

Crossrefs

Column k=6 of A251072.

Cf. A250663.

Sequence in context: A138695 A297412 A282294 * A248018 A262491 A029816

Adjacent sequences: A251072 A251073 A251074 * A251076 A251077 A251078

Keyword

nonn

Author

Alois P. Heinz, Nov 29 2014

Status

approved