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A257387 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 9
5 21
6 51
7 127
8 323
9 834
10 2179
11 5743
12 15238
13 40637
14 108800
15 292200
16 786703
17 2122387
18 5735596
19 15522682
20 42064028
21 114117541
22 309918698
23 842489130
24 2292332265
25 6242655886

[1,1,2,4,9,21,51,127,323,834,2179,5743,15238,
 40637,108800,292200,786703,2122387,5735596,
 15522682,42064028,114117541,309918698,842489130,
 2292332265,6242655886]

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Last modified April 24 19:06 EDT 2024. Contains 371962 sequences. (Running on oeis4.)