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A209478 as a simple table

n a(n)
1 1
2 2
3 1
4 4
5 4
6 11
7 15
8 43
9 77
10 199
11 423
12 1080
13 2514
14 6355
15 15529
16 39429
17 98875
18 252551
19 643133
20 1653677
21 4254070
22 11005241
23 28518931
24 74179434
25 193328017
26 505236093
27 1322919905
28 3471492272
29 9125743338

[1,2,1,4,4,11,15,43,77,199,423,1080,2514,6355,
 15529,39429,98875,252551,643133,1653677,4254070,
 11005241,28518931,74179434,193328017,505236093,
 1322919905,3471492272,9125743338]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)