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A033838 formatted as a simple table:

n a(n)
1 2
2 0
3 99
4 0
5 308
6 36140
7 269458
8 391907
9 10067135
10 0
11 0
12 0
13 1428423394
14 0
15 32693825124
16 0
17 797557733967
18 11512812322194
19 58598336876363
20 192937380661240
21 1443716084981654
22 0
23 36185564197761935

[2,0,99,0,308,36140,269458,391907,10067135,0,0,0,
 1428423394,0,32693825124,0,797557733967,
 11512812322194,58598336876363,192937380661240,
 1443716084981654,0,36185564197761935]

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


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