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A260650 as a simple table

n a(n)
1 1
2 4
3 18
4 88
5 455
6 2444
7 13486
8 75912
9 433935
10 2511388
11 14684422
12 86611848
13 514704064
14 3078845696
15 18523994024
16 112026315616
17 680626958899
18 4152411174284
19 25428402204982
20 156247439709832
21 963048223399984
22 5952595420121536
23 36887847899094888
24 229132114803540320
25 1426367728966653535
26 8897049258366111004

[1,4,18,88,455,2444,13486,75912,433935,2511388,
 14684422,86611848,514704064,3078845696,
 18523994024,112026315616,680626958899,
 4152411174284,25428402204982,156247439709832,
 963048223399984,5952595420121536,
 36887847899094888,229132114803540320,
 1426367728966653535,8897049258366111004]

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Last modified May 16 13:05 EDT 2024. Contains 372552 sequences. (Running on oeis4.)