A001397
formatted as a simple table:
n
a(n)
1
4
2
24
3
188
4
1368
5
10572
[4,24,188,1368,10572]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
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