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A008402 formatted as a simple table:

n a(n)
0 1
1 55
2 883
3 6085
4 26461
5 86491
6 232975
7 545833
8 1151065
9 2235871
10 4065931
11 7004845
12 11535733
13 18284995
14 28048231
15 41818321
16 60815665
17 86520583
18 120707875
19 165483541
20 223323661
21 297115435

[1,55,883,6085,26461,86491,232975,545833,1151065,
 2235871,4065931,7004845,11535733,18284995,
 28048231,41818321,60815665,86520583,120707875,
 165483541,223323661,297115435]

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.


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