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A161999 as a simple table

n a(n)
1 0
2 1
3 1
4 10
5 20
6 101
7 301
8 1030
9 4040
10 10601
11 51001
12 110050
13 620060
14 1151501
15 7352101
16 12135070
17 85656080
18 128702801
19 985263601
20 1372684090
21 11225320100
22 14712104501
23 126965305501
24 158346365110
25 1427999420120

[0,1,1,10,20,101,301,1030,4040,10601,51001,110050,
 620060,1151501,7352101,12135070,85656080,
 128702801,985263601,1372684090,11225320100,
 14712104501,126965305501,158346365110,
 1427999420120]

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Last modified April 25 04:42 EDT 2024. Contains 371964 sequences. (Running on oeis4.)