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A002524 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 14
5 31
6 73
7 172
8 400
9 932
10 2177
11 5081
12 11854
13 27662
14 64554
15 150639
16 351521
17 820296
18 1914208
19 4466904
20 10423761
21 24324417
22 56762346
23 132458006
24 309097942
25 721296815
26 1683185225
27 3927803988
28 9165743600
29 21388759708
30 49911830577
31 116471963129

[1,1,2,6,14,31,73,172,400,932,2177,5081,11854,
 27662,64554,150639,351521,820296,1914208,4466904,
 10423761,24324417,56762346,132458006,309097942,
 721296815,1683185225,3927803988,9165743600,
 21388759708,49911830577,116471963129]

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Last modified November 18 13:22 EST 2018. Contains 317306 sequences. (Running on oeis4.)