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A186240 as a simple table

n a(n)
0 1
1 1
2 2
3 7
4 21
5 66
6 228
7 799
8 2843
9 10357
10 38278
11 143012
12 539980
13 2056848
14 7892496
15 30483351
16 118416903
17 462348219
18 1813410078
19 7141608015
20 28229040165
21 111956307486
22 445374729396
23 1776704142348
24 7105896093588
25 28487216564476
26 114454156300136
27 460781265916312

[1,1,2,7,21,66,228,799,2843,10357,38278,143012,
 539980,2056848,7892496,30483351,118416903,
 462348219,1813410078,7141608015,28229040165,
 111956307486,445374729396,1776704142348,
 7105896093588,28487216564476,114454156300136,
 460781265916312]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)