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A152801 formatted as a simple table:

n a(n)
0 1
1 2
2 5
3 21
4 87
5 378
6 1682
7 7596
8 34688
9 159724
10 740243
11 3448579
12 16134813
13 75760294
14 356811308
15 1684882778
16 7974184903
17 37815280813
18 179644013528
19 854749753320
20 4072634928710
21 19429522879905
22 92799859650401

[1,2,5,21,87,378,1682,7596,34688,159724,740243,
 3448579,16134813,75760294,356811308,1684882778,
 7974184903,37815280813,179644013528,854749753320,
 4072634928710,19429522879905,92799859650401]

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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