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A200074 as a simple table

n a(n)
0 1
1 1
2 3
3 9
4 30
5 108
6 406
7 1577
8 6280
9 25499
10 105169
11 439388
12 1855636
13 7908909
14 33975250
15 146954693
16 639460707
17 2797384235
18 12295494109
19 54272825103
20 240480529815
21 1069257987503
22 4769306203838
23 21334400243252
24 95687482105807
25 430217846136134
26 1938651904470374
27 8754225470415889

[1,1,3,9,30,108,406,1577,6280,25499,105169,439388,
 1855636,7908909,33975250,146954693,639460707,
 2797384235,12295494109,54272825103,240480529815,
 1069257987503,4769306203838,21334400243252,
 95687482105807,430217846136134,1938651904470374,
 8754225470415889]

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Last modified April 18 09:35 EDT 2024. Contains 371779 sequences. (Running on oeis4.)