A247772 Number of tilings of a 5 X n rectangle using n pentominoes of any but the U shape.

1, 1, 5, 39, 369, 2908, 19185, 137200, 1022915, 7606043, 55699672, 405617356, 2969215193, 21791407596, 159806458014, 1170659384512, 8574740528977, 62830753812692, 460445907547463, 3374031670320652, 24722398637797408, 181148733466258107, 1327366881461315358

Offset

0,3

Links

Alois P. Heinz, Table of n, a(n) for n = 0..500

Wikipedia, Pentomino

Crossrefs

Column k=0 of A247708.

Cf. A174249, A233427.

Sequence in context: A115187 A266456 A365765 * A129763 A277424 A182954

Adjacent sequences: A247769 A247770 A247771 * A247773 A247774 A247775

Keyword

nonn

Author

Alois P. Heinz, Sep 23 2014

Status

approved