1,2
Ed Pegg, Jr., Illustrations of polyforms
Eric Weisstein's World of Mathematics, Polykite
Sequence in context: A045694 A129772 A046721 * A132803 A079565 A052890
Adjacent sequences: A151525 A151526 A151527 * A151529 A151530 A151531
nonn
Ed Pegg, Jr., (ed(AT)mathpuzzle.com), May 13 2009
a(13)-a(17) from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 28 2010