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A048180 as a simple table

n a(n)
4 1
5 4
6 24
7 131
8 663
9 3252
10 15772
11 75415
12 359307
13 1711908
14 8191607
15 39500169
16 192525021
17 950868860
18 4769060224
19 24331970791
20 126457607026
21 670143402073
22 3623530476832
23 19998343352758
24 112668088476243
25 647904733883526

[1,4,24,131,663,3252,15772,75415,359307,1711908,
 8191607,39500169,192525021,950868860,4769060224,
 24331970791,126457607026,670143402073,
 3623530476832,19998343352758,112668088476243,
 647904733883526]

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Last modified May 13 06:37 EDT 2024. Contains 372498 sequences. (Running on oeis4.)