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A071735 as a simple table

n a(n)
0 1
1 2
2 5
3 15
4 47
5 152
6 504
7 1705
8 5863
9 20436
10 72046
11 256462
12 920550
13 3328192
14 12109270
15 44305245
16 162911415
17 601700700
18 2231255070
19 8304089970
20 31007435970
21 116130446640
22 436137803400
23 1642112017338
24 6197239974582

[1,2,5,15,47,152,504,1705,5863,20436,72046,256462,
 920550,3328192,12109270,44305245,162911415,
 601700700,2231255070,8304089970,31007435970,
 116130446640,436137803400,1642112017338,
 6197239974582]

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Last modified January 23 19:17 EST 2022. Contains 350515 sequences. (Running on oeis4.)