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A231181 as a simple table

n a(n)
0 1
1 1
2 5
3 6
4 20
5 27
6 75
7 110
8 275
9 429
10 1001
11 1637
12 3639
13 6172
14 13243
15 23104
16 48280
17 86090
18 176341
19 319792
20 645150
21 1185305
22 2363596
23 4386331
24 8669142
25 16212913
26 31825005
27 59873834
28 116914020
29 220964744
30 429737220
31 815057639
32 1580244061

[1,1,5,6,20,27,75,110,275,429,1001,1637,3639,6172,
 13243,23104,48280,86090,176341,319792,645150,
 1185305,2363596,4386331,8669142,16212913,31825005,
 59873834,116914020,220964744,429737220,815057639,
 1580244061]

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)