OFFSET

1,1

COMMENTS

The Zucca web site calls these figures "n-DifferentSquares".

REFERENCES

Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987.

LINKS

Livio Zucca, PolyMultiForms

CROSSREFS

KEYWORD

nonn,nice,hard,more

AUTHOR

N. J. A. Sloane, Aug 17 2006

EXTENSIONS

More terms from Don Reble, Aug 17 2007

a(13) from Joseph Myers, Oct 06 2011

STATUS

approved