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A000770 formatted as a simple table:

n a(n)
6 1
7 21
8 266
9 2646
10 22827
11 179487
12 1323652
13 9321312
14 63436373
15 420693273
16 2734926558
17 17505749898
18 110687251039
19 693081601779
20 4306078895384

[1,21,266,2646,22827,179487,1323652,9321312,
 63436373,420693273,2734926558,17505749898,
 110687251039,693081601779,4306078895384]

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


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