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A007776 formatted as a simple table:

n a(n)
1 1
2 2
3 4
4 10
5 27
6 88
7 328
8 1460
9 7799
10 51196
11 422521
12 4483460
13 62330116
14 1150504224
15 28434624153
16 945480850638
17 42417674401330
18 2572198227615998
19 211135833162079184
20 23487811567341121158
21 3545543330739039981738

[1,2,4,10,27,88,328,1460,7799,51196,422521,
 4483460,62330116,1150504224,28434624153,
 945480850638,42417674401330,2572198227615998,
 211135833162079184,23487811567341121158,
 3545543330739039981738]

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.


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