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A247291 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 7
5 15
6 32
7 69
8 154
9 346
10 786
11 1806
12 4180
13 9745
14 22865
15 53938
16 127865
17 304447
18 727733
19 1745736
20 4201350
21 10140975
22 24544000
23 59551327
24 144822097
25 352940719
26 861839226
27 2108381480
28 5166749329
29 12681855551
30 31174671514
31 76742344774

[1,1,2,4,7,15,32,69,154,346,786,1806,4180,9745,
 22865,53938,127865,304447,727733,1745736,4201350,
 10140975,24544000,59551327,144822097,352940719,
 861839226,2108381480,5166749329,12681855551,
 31174671514,76742344774]

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Last modified April 18 06:24 EDT 2024. Contains 371769 sequences. (Running on oeis4.)