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A001444
Bending a piece of wire of length n+1 (configurations that can only be brought into coincidence by turning the figure over are counted as different).
+0
5
1, 2, 6, 15, 45, 126, 378, 1107, 3321, 9882, 29646, 88695, 266085, 797526, 2392578, 7175547, 21526641, 64573362, 193720086, 581140575, 1743421725, 5230206126, 15690618378, 47071677987, 141215033961
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Maintained by
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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.
AT&T Labs Research
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