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A077054 formatted as a simple table:

n a(n)
0 1
1 1
2 3
3 14
4 81
5 538
6 3926
7 30694
8 252939
9 2172830
10 19304190
11 176343390
12 1649008456
13 15730575554
14 152663683494
15 1503962954930
16 15012865733351
17 151622652413194
18 1547365078534578
19 15939972379349178
20 165597452660771610
21 1733609081727968492

[1,1,3,14,81,538,3926,30694,252939,2172830,
 19304190,176343390,1649008456,15730575554,
 152663683494,1503962954930,15012865733351,
 151622652413194,1547365078534578,
 15939972379349178,165597452660771610,
 1733609081727968492]

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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