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A154964 as a simple table

n a(n)
0 1
1 1
2 5
3 21
4 93
5 405
6 1773
7 7749
8 33885
9 148149
10 647757
11 2832165
12 12383037
13 54142101
14 236724525
15 1035026181
16 4525425693
17 19786434165
18 86511856653
19 378254174949
20 1653833664765
21 7231026043989
22 31616080120557
23 138234396625605
24 604399670600157
25 2642605391554101

[1,1,5,21,93,405,1773,7749,33885,148149,647757,
 2832165,12383037,54142101,236724525,1035026181,
 4525425693,19786434165,86511856653,378254174949,
 1653833664765,7231026043989,31616080120557,
 138234396625605,604399670600157,2642605391554101]

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Last modified April 24 04:45 EDT 2019. Contains 322412 sequences. (Running on oeis4.)