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A143246 formatted as a simple table:

n a(n)
1 0
2 2
3 0
4 12
5 0
6 2144
7 0
8 9277152
9 0
10 934520913216
11 0
12 2152453777211211412
13 0
14 112252999240982874562527216
15 0
16 131765033045251672652319572331061144
17 0
18 3467852755777932367855581588111341658695967892
19 0

[0,2,0,12,0,2144,0,9277152,0,934520913216,0,
 2152453777211211412,0,112252999240982874562527216,
 0,131765033045251672652319572331061144,0,
 3467852755777932367855581588111341658695967892,0]

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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