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A247777
Number of tilings of a 5 X n rectangle using n pentominoes of any but the Z shape.
2
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
Wikipedia, Pentomino
CROSSREFS
Column k=0 of A247713.
Sequence in context: A173719 A081075 A247766 * A193809 A134111 A071583
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Sep 23 2014
STATUS
approved