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A054360 formatted as a simple table:

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 4
8 26
9 235
10 1585
11 10453
12 40151
13 199922
14 792867
15 3146993
16 12532362
17 49280874
18 189564720
19 739243108
20 2858545267
21 11101139486
22 43154849550
23 167993679964

[0,0,0,0,0,0,4,26,235,1585,10453,40151,199922,
 792867,3146993,12532362,49280874,189564720,
 739243108,2858545267,11101139486,43154849550,
 167993679964]

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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