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A027001 as a simple table

n a(n)
2 1
3 26
4 174
5 743
6 2552
7 7784
8 22193
9 60882
10 163430
11 433495
12 1142496
13 3001056
14 7869649
15 20619098
16 54001422
17 141401879
18 370224248
19 969294632
20 2537687585
21 6643800690
22 17393752166
23 45537499111
24 119218794624
25 312118940928
26 817138091617
27 2139295405274

[1,26,174,743,2552,7784,22193,60882,163430,433495,
 1142496,3001056,7869649,20619098,54001422,
 141401879,370224248,969294632,2537687585,
 6643800690,17393752166,45537499111,119218794624,
 312118940928,817138091617,2139295405274]

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Last modified June 6 19:21 EDT 2024. Contains 373134 sequences. (Running on oeis4.)