A247777 Number of tilings of a 5 X n rectangle using n pentominoes of any but the Z shape.

1, 1, 5, 52, 451, 3498, 23502, 173611, 1323447, 9920654, 73573634, 545170514, 4060213800, 30266880736, 225316532881, 1676398961171, 12475867876511, 92870049802057, 691310371544378, 5145544200921776, 38298595223058076, 285066094324142481, 2121840794371117780

Offset

0,3

Links

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

Wikipedia, Pentomino

Crossrefs

Column k=0 of A247713.

Cf. A174249, A233427.

Sequence in context: A173719 A081075 A247766 * A193809 A134111 A071583

Adjacent sequences: A247774 A247775 A247776 * A247778 A247779 A247780

Keyword

nonn

Author

Alois P. Heinz, Sep 23 2014

Status

approved