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A054681 formatted as a simple table:

n a(n)
1 2
2 139
3 1627
4 18839
5 123229
6 776257
7 3873011
8 23884639
9 36539311
10 196943081
11 452942827
12 73712513057
13 154351758091
14 154351758091
15 4010803176619
16 6987191424553

[2,139,1627,18839,123229,776257,3873011,23884639,
 36539311,196943081,452942827,73712513057,
 154351758091,154351758091,4010803176619,
 6987191424553]

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Last modified December 6 19:58 EST 2009. Contains 170429 sequences.


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