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A051026
Number of primitive subsequences of {1, 2, ..., n}.
+0
5
1, 2, 3, 5, 7, 13, 17, 33, 45, 73, 103, 205, 253, 505, 733, 1133, 1529, 3057, 3897, 7793, 10241, 16513, 24593, 49185, 59265, 109297, 163369, 262489, 355729, 711457, 879937, 1759873
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 6 11:04 EST 2009. Contains 170427 sequences.
AT&T Labs Research
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