OFFSET
0,3
LINKS
David A. Klarner and Spyros S. Magliveras, The number of tilings of a block with blocks, European Journal of Combinatorics 9 (1988), 317-330.
Joshua Smith and Helena Verrill, On dividing rectangles into rectangles
FORMULA
a(n) = A116694(n,n) for n > 0.
EXAMPLE
For n=2 the a(2) = 8 ways to divide are:
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CROSSREFS
KEYWORD
nonn
AUTHOR
_Matthew C. Russell_, Apr 23 2012
EXTENSIONS
a(11)-a(12) from _Steve Butler_, Mar 14 2014
STATUS
approved