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A229068 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 10
5 26
6 76
7 232
8 764
9 2620
10 9496
11 35696
12 140152
13 568503
14 2390466
15 10349340
16 46204720
17 211779200
18 997134592
19 4808141824
20 23745792032
21 119848119307
22 618058083314
23 3251373425356
24 17442275104496
25 95297400355320
26 530067682582320
27 2998503402985440

[1,1,2,4,10,26,76,232,764,2620,9496,35696,140152,
 568503,2390466,10349340,46204720,211779200,
 997134592,4808141824,23745792032,119848119307,
 618058083314,3251373425356,17442275104496,
 95297400355320,530067682582320,2998503402985440]

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Last modified March 28 04:13 EDT 2024. Contains 371235 sequences. (Running on oeis4.)