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A002846 as a simple table

n a(n)
1 1
2 1
3 1
4 2
5 4
6 11
7 33
8 116
9 435
10 1832
11 8167
12 39700
13 201785
14 1099449
15 6237505
16 37406458
17 232176847
18 1513796040
19 10162373172
20 71158660160
21 511957012509
22 3819416719742
23 29195604706757
24 230713267586731
25 1861978821637735
26 15484368121967620
27 131388840051760458

[1,1,1,2,4,11,33,116,435,1832,8167,39700,201785,
 1099449,6237505,37406458,232176847,1513796040,
 10162373172,71158660160,511957012509,
 3819416719742,29195604706757,230713267586731,
 1861978821637735,15484368121967620,
 131388840051760458]

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Last modified April 23 12:59 EDT 2024. Contains 371913 sequences. (Running on oeis4.)