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A030801 formatted as a simple table:

n a(n)
1 2
2 4
3 12
4 48
5 243
6 1462
7 10234
8 81873
9 736865
10 7368656
11 81055217
12 972662611
13 12644613946
14 177024595248
15 2655368928725
16 42485902859600
17 722260348613214
18 13000686275037868
19 247013039225719510
20 4940260784514390215

[2,4,12,48,243,1462,10234,81873,736865,7368656,
 81055217,972662611,12644613946,177024595248,
 2655368928725,42485902859600,722260348613214,
 13000686275037868,247013039225719510,
 4940260784514390215]

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.


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