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A148075 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 9
5 21
6 56
7 169
8 482
9 1505
10 4655
11 14419
12 46683
13 153632
14 522567
15 1760914
16 6050077
17 20830801
18 72215812
19 256321026
20 908687720
21 3272602542
22 11754785559
23 42458425816
24 154767487534
25 565357807589
26 2092065007291
27 7725542715670
28 28717905731799
29 106970060346082
30 399403757982693
31 1504067532147492

[1,1,2,4,9,21,56,169,482,1505,4655,14419,46683,
 153632,522567,1760914,6050077,20830801,72215812,
 256321026,908687720,3272602542,11754785559,
 42458425816,154767487534,565357807589,
 2092065007291,7725542715670,28717905731799,
 106970060346082,399403757982693,1504067532147492]

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Last modified April 24 10:00 EDT 2024. Contains 371935 sequences. (Running on oeis4.)