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A174251
Number of tilings of a 7 X n rectangle with n heptominoes of any shape.
5
1, 1, 7, 259, 9525, 270827, 6633399, 158753814, 3825111851, 96608374284, 2446223788303
OFFSET
0,3
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Bob Harris (me13013(AT)gmail.com), Mar 13 2010
STATUS
approved