OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..200
Alois P. Heinz, G.f. and Maple program for A220300
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
G.f.: see link above.
MAPLE
# see link above.
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Dec 10 2012
STATUS
approved