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A104100 formatted as a simple table:

n a(n)
0 0
1 20
2 57
3 434
4 1717
5 10553
6 47573
7 265684
8 1276818
9 6811097
10 33775052
11 176219759
12 887333535
13 4580070573
14 23235380380
15 119306276376
16 607466542861
17 3111219668378
18 15869382126877
19 81176527531045
20 414414451168349

[0,20,57,434,1717,10553,47573,265684,1276818,
 6811097,33775052,176219759,887333535,4580070573,
 23235380380,119306276376,607466542861,
 3111219668378,15869382126877,81176527531045,
 414414451168349]

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


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