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A218134 as a simple table

n a(n)
0 1
1 4
2 17
3 80
4 369
5 1700
6 7841
7 36160
8 166753
9 768996
10 3546289
11 16354000
12 75417809
13 347795396
14 1603886913
15 7396455680
16 34109360321
17 157298104900
18 725393076049
19 3345209499600
20 15426707209777
21 71141522037604
22 328074947492321
23 1512944453384000
24 6977067089461281

[1,4,17,80,369,1700,7841,36160,166753,768996,
 3546289,16354000,75417809,347795396,1603886913,
 7396455680,34109360321,157298104900,725393076049,
 3345209499600,15426707209777,71141522037604,
 328074947492321,1512944453384000,6977067089461281]

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Last modified April 25 09:20 EDT 2024. Contains 371967 sequences. (Running on oeis4.)