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A254530
a(n) = A181162(n) / n, n>=1.
0
1, 5, 47, 706, 14313, 374016, 11997457, 460158224, 20671937025, 1071624134224, 63368460514401, 4235641240358232, 317640391931394049, 26555904023833864616, 2461223025846241927425, 251574807412822558973536, 28223316187761759785968641, 3459174110134084070825015328, 461154818319652703166752585377, 66589665425419376047897811260040
OFFSET
1,2
CROSSREFS
Cf. A181162.
Sequence in context: A098799 A270529 A089155 * A086555 A246040 A183773
KEYWORD
nonn
AUTHOR
Joerg Arndt, Feb 01 2015
STATUS
approved