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A151534
Number of 1-sided polycairos with n cells.
4
1, 3, 8, 31, 103, 401, 1537, 6157, 24748, 101291, 417374, 1735847, 7261892, 30561122, 129215115
OFFSET
1,2
LINKS
Eric Weisstein's World of Mathematics, Polycairo
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Ed Pegg Jr, May 13 2009
EXTENSIONS
a(11)-a(15) from Joseph Myers, Oct 03 2011
STATUS
approved