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A157617
On an n X n board, a(n) is the maximal number of squares covered by a self-avoiding cycle made of alternated vertical and horizontal unit length steps.
3
4, 4, 12, 16, 28, 32, 52, 64, 80, 96, 124
OFFSET
2,1
COMMENTS
From an idea of Leroy Quet, discussed on the SeqFan mailing list.
LINKS
Diophante.fr, LES RECREATIONS MATHEMATIQUES, PLUS DE 2000 RECREATIONS ET PROBLEMES MATHEMATIQUES. See Problem G264.
CROSSREFS
Sequence in context: A323189 A121189 A136485 * A053415 A303315 A331606
KEYWORD
hard,more,nonn
AUTHOR
Giovanni Resta, Mar 03 2009
STATUS
approved