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A026763 as a simple table

n a(n)
2 1
3 7
4 38
5 190
6 918
7 4365
8 20594
9 96804
10 454362
11 2132121
12 10010203
13 47042042
14 221337726
15 1042837195
16 4920447410
17 23250646651
18 110029743083
19 521462857972
20 2474929099976
21 11762845907633
22 55982738983975
23 266789302547057

[1,7,38,190,918,4365,20594,96804,454362,2132121,
 10010203,47042042,221337726,1042837195,4920447410,
 23250646651,110029743083,521462857972,
 2474929099976,11762845907633,55982738983975,
 266789302547057]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)