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A000310 formatted as a simple table:

n a(n)
1 1
2 4
3 26
4 234
5 2696
6 37919
7 630521
8 12111114
9 264051201
10 6445170229
11 174183891471
12 5164718385337
13 166737090160871
14 5822980248613990
15 218756388226681557
16 8797723991458469015
17 377159237609540937788

[1,4,26,234,2696,37919,630521,12111114,264051201,
 6445170229,174183891471,5164718385337,
 166737090160871,5822980248613990,
 218756388226681557,8797723991458469015,
 377159237609540937788]

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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