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A073431 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 3
5 6
6 12
7 28
8 65
9 160
10 408
11 1074
12 2898
13 7998
14 22508
15 64426
16 187251
17 551730
18 1645840
19 4964876
20 15130808
21 46545788
22 144424944
23 451715460

[1,1,1,2,3,6,12,28,65,160,408,1074,2898,7998,
 22508,64426,187251,551730,1645840,4964876,
 15130808,46545788,144424944,451715460]

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Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)