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A088016 formatted as a simple table:

n a(n)
0 1
1 1
2 6
3 17
4 56
5 179
6 576
7 1851
8 5950
9 19125
10 61474
11 197597
12 635140
13 2041543
14 6562172
15 21092919
16 67799386
17 217928905
18 700493182
19 2251609065
20 7237391472
21 23263290299
22 74775653304
23 240352858739
24 772570939222
25 2483290023101

[1,1,6,17,56,179,576,1851,5950,19125,61474,197597,
 635140,2041543,6562172,21092919,67799386,
 217928905,700493182,2251609065,7237391472,
 23263290299,74775653304,240352858739,772570939222,
 2483290023101]

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


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