1,2
Ed Pegg, Jr., Illustrations of polyforms
Eric Weisstein's World of Mathematics, Polykite
Sequence in context: A112884 A103421 A205484 * A180752 A000642 A035083
Adjacent sequences: A151527 A151528 A151529 * A151531 A151532 A151533
nonn
Ed Pegg, Jr., (ed(AT)mathpuzzle.com), May 13 2009
a(15)-a(22) from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 28 2010