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A000237 formatted as a simple table:

n a(n)
0 0
1 1
2 1
3 3
4 8
5 26
6 84
7 297
8 1066
9 3976
10 15093
11 58426
12 229189
13 910127
14 3649165
15 14756491
16 60103220
17 246357081
18 1015406251
19 4205873378
20 17497745509
21 73084575666
22 306352303774
23 1288328048865
24 5433980577776
25 22982025183983

[0,1,1,3,8,26,84,297,1066,3976,15093,58426,229189,
 910127,3649165,14756491,60103220,246357081,
 1015406251,4205873378,17497745509,73084575666,
 306352303774,1288328048865,5433980577776,
 22982025183983]

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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