login
A151531
Number of 1-sided polypons with n cells.
4
1, 2, 3, 5, 7, 15, 24, 49, 91, 183, 356, 734, 1465, 3017, 6153, 12721, 26230, 54575, 113480, 237296, 496612, 1042785, 2192207, 4619736, 9747966, 20607348
OFFSET
1,2
COMMENTS
The division of a polypon into triangles is considered significant for this sequence, as for A057784. - Joseph Myers, Oct 02 2011
LINKS
Eric Weisstein's World of Mathematics, Polypon
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Ed Pegg Jr, May 13 2009
EXTENSIONS
a(19)-a(26) from Joseph Myers, Oct 02 2011
STATUS
approved