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A055402 as a simple table

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 15
9 23
10 50
11 114
12 330
13 1330
14 10591
15 215970
16 19464802
17 16542386125
18 409477218238718
19 1594640520554911022654
20 12254971660196485116306102211582
21 8256321288165573196207266557193504883194549246

[1,2,3,4,5,6,7,15,23,50,114,330,1330,10591,215970,
 19464802,16542386125,409477218238718,
 1594640520554911022654,
 12254971660196485116306102211582,
 8256321288165573196207266557193504883194549246]

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Last modified August 22 07:17 EDT 2019. Contains 326172 sequences. (Running on oeis4.)