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A292765
A292764(n)/2.
1
1, 4, 9, 18, 33, 60, 105, 180, 309, 526, 895, 1520, 2581, 4378, 7427, 12596
OFFSET
1,2
CROSSREFS
Cf. A292764.
Sequence in context: A266339 A192760 A295964 * A357282 A301157 A019454
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Sep 27 2017
STATUS
approved