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A251078
Number of tilings of a 27 X n rectangle using 3n nonominoes of shape I.
3
1, 1, 1, 1, 1, 1, 1, 1, 1, 76, 195, 364, 589, 876, 1231, 1660, 2169, 2764, 21232, 57379, 123291, 235860, 417784, 698657, 1116149, 1717276, 2559760, 7386240, 18797731, 42769684, 89201688, 173879976, 321141337, 567405676, 965768880, 1591873744, 3298800992
OFFSET
0,10
LINKS
Wikipedia, Nonomino
CROSSREFS
Column k=9 of A251072.
Cf. A250666.
Sequence in context: A245005 A138855 A324632 * A153676 A060316 A005571
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Nov 29 2014
STATUS
approved