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A233430
Number of tilings of a 6 X 5n rectangle with 6n pentominoes of any shape.
1
1, 27950, 7845888732, 2440547587954985, 761939299852168617616, 237901286831883052707985079, 74280211349600198206855422647223, 23192594468009753324332443890051572285, 7241449792690453645696899431118614611440302, 2261005988402064534018912069618412264537768750810
OFFSET
0,2
CROSSREFS
Quintisection of column k=6 of A233427.
Sequence in context: A202403 A206618 A363168 * A220986 A242607 A203658
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Dec 09 2013
STATUS
approved