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A001256 formatted as a simple table:

n a(n)
0 1
1 1
2 1
3 1
4 4
5 9
6 36
7 121
8 529
9 2209
10 11236
11 55225
12 303601
13 1692601
14 9979281
15 59923081
16 373262400
17 2364779641
18 15343033689
19 101095382025
20 677435994225
21 4598901695025
22 31626631547536
23 219871778549476

[1,1,1,1,4,9,36,121,529,2209,11236,55225,303601,
 1692601,9979281,59923081,373262400,2364779641,
 15343033689,101095382025,677435994225,
 4598901695025,31626631547536,219871778549476]

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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