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A119373 formatted as a simple table:

n a(n)
0 1
1 2
2 6
3 20
4 70
5 253
6 938
7 3546
8 13617
9 52967
10 208255
11 826315
12 3304456
13 13304924
14 53891402
15 219442686
16 897772983
17 3688451380
18 15211545938
19 62950542636
20 261329456566
21 1087985751336
22 4541524025769
23 19003488710465
24 79696345430789

[1,2,6,20,70,253,938,3546,13617,52967,208255,
 826315,3304456,13304924,53891402,219442686,
 897772983,3688451380,15211545938,62950542636,
 261329456566,1087985751336,4541524025769,
 19003488710465,79696345430789]

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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