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A228770 as a simple table

n a(n)
1 1
2 1
3 3
4 12
5 51
6 217
7 912
8 3785
9 15554
10 63458
11 257566
12 1041548
13 4200462
14 16906262
15 67943341
16 272740788
17 1093881967
18 4384217569
19 17562176283
20 70319782015
21 281466691159
22 1126304935761
23 4505961410365
24 18023526090613
25 72082118816829
26 288245594631227
27 1152536796877409
28 4607992736095739
29 18422141293792669
30 73645313049839723

[1,1,3,12,51,217,912,3785,15554,63458,257566,
 1041548,4200462,16906262,67943341,272740788,
 1093881967,4384217569,17562176283,70319782015,
 281466691159,1126304935761,4505961410365,
 18023526090613,72082118816829,288245594631227,
 1152536796877409,4607992736095739,
 18422141293792669,73645313049839723]

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Last modified April 30 12:47 EDT 2024. Contains 372134 sequences. (Running on oeis4.)