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A155238 as a simple table

n a(n)
3 1
4 4
5 13
6 28
7 125
8 568
9 3422
10 27373
11 226848
12 2490002
13 34395449
14 564841115
15 11835714950
16 297683710781
17 9228089921657 

[1,4,13,28,125,568,3422,27373,226848,2490002,
 34395449,564841115,11835714950,297683710781,
 9228089921657]

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Last modified April 23 02:53 EDT 2024. Contains 371906 sequences. (Running on oeis4.)