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A113153 formatted as a simple table:

n a(n)
1 1
2 2
3 4
4 8
5 17
6 54
7 472
8 27216
9 84738887
10 299164114847940
11 311903053042108587337426568
12 5846720173185251353387753850814872871131756204168 

[1,2,4,8,17,54,472,27216,84738887,299164114847940,
 311903053042108587337426568,
 5846720173185251353387753850814872871131756204168]

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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