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A001910 formatted as a simple table:

n a(n)
3 0
4 1
5 5
6 31
7 227
8 1909
9 18089
10 190435
11 2203319
12 27772873
13 378673901
14 5551390471
15 87057596075
16 1453986832381
17 25762467303377
18 482626240281739
19 9530573107600319
20 197850855756232465
21 4307357140602486869

[0,1,5,31,227,1909,18089,190435,2203319,27772873,
 378673901,5551390471,87057596075,1453986832381,
 25762467303377,482626240281739,9530573107600319,
 197850855756232465,4307357140602486869]

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


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