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A000590 formatted as a simple table:

n a(n)
6 1
7 13
8 104
9 663
10 3705
11 19019
12 92092
13 427570
14 1924065
15 8454225
16 36463440
17 154969620
18 650872404
19 2707475148
20 11173706960
21 45812198536
22 186803188858

[1,13,104,663,3705,19019,92092,427570,1924065,
 8454225,36463440,154969620,650872404,2707475148,
 11173706960,45812198536,186803188858]

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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