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A046722 as a simple table

n a(n)
3 1
4 3
5 11
6 37
7 126
8 430
9 1454
10 4976
11 16880
12 57824
13 197010
14 675428
15 2310268
16 7927778
17 27205180
18 93448486
19 321537086
20 1105589516
21 3812424912
22 13121988240
23 45330375774
24 156172996170
25 540314673678
26 1863197292582
27 6454265995454
28 22275589419432
29 77246945788890
30 266813803179348

[1,3,11,37,126,430,1454,4976,16880,57824,197010,
 675428,2310268,7927778,27205180,93448486,
 321537086,1105589516,3812424912,13121988240,
 45330375774,156172996170,540314673678,
 1863197292582,6454265995454,22275589419432,
 77246945788890,266813803179348]

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Last modified April 23 07:42 EDT 2024. Contains 371905 sequences. (Running on oeis4.)