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A290912 as a simple table

n a(n)
0 0
1 1
2 4
3 16
4 68
5 287
6 1208
7 5088
8 21432
9 90273
10 380236
11 1601584
12 6745996
13 28414655
14 119684720
15 504121280
16 2123397744
17 8943915201
18 37672461204
19 158679314512
20 668369521108
21 2815224014047
22 11857940853032
23 49946562182048
24 210378775263272
25 886131640451169

[0,1,4,16,68,287,1208,5088,21432,90273,380236,
 1601584,6745996,28414655,119684720,504121280,
 2123397744,8943915201,37672461204,158679314512,
 668369521108,2815224014047,11857940853032,
 49946562182048,210378775263272,886131640451169]

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Last modified May 22 21:38 EDT 2024. Contains 372758 sequences. (Running on oeis4.)