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A124504 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 11
5 32
6 113
7 422
8 1788
9 8015
10 39435
11 204910
12 1144377
13 6722107
14 41877722
15 273328660
16 1875326627
17 13427171644
18 100415636519
19 780856389454
20 6312398830812
21 52891894374481
22 459022366424253
23 4117482357137214
24 38140612800271305
25 364280428671552453
26 3584042687233836274

[1,1,2,4,11,32,113,422,1788,8015,39435,204910,
 1144377,6722107,41877722,273328660,1875326627,
 13427171644,100415636519,780856389454,
 6312398830812,52891894374481,459022366424253,
 4117482357137214,38140612800271305,
 364280428671552453,3584042687233836274]

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Last modified August 22 20:23 EDT 2019. Contains 326182 sequences. (Running on oeis4.)