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A188491 as a simple table

n a(n)
0 0
1 1
2 2
3 6
4 14
5 48
6 152
7 476
8 1425
9 4340
10 13288
11 40852
12 125124
13 382888
14 1171612
15 3587505
16 10985790
17 33638142
18 102988410
19 315318756
20 965432832
21 2955964296
22 9050522241
23 27710613432
24 84843476928
25 259771465608
26 795361704776
27 2435217884992

[0,1,2,6,14,48,152,476,1425,4340,13288,40852,
 125124,382888,1171612,3587505,10985790,33638142,
 102988410,315318756,965432832,2955964296,
 9050522241,27710613432,84843476928,259771465608,
 795361704776,2435217884992]

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Last modified April 23 02:53 EDT 2024. Contains 371906 sequences. (Running on oeis4.)