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A077269 as a simple table

n a(n)
1 1
2 1
3 2
4 3
5 8
6 19
7 57
8 186
9 740
10 3389
11 18502
12 120221
13 932260
14 8596844
15 93762704
16 1201732437
17 17992683043
18 313098431306
19 6305419392541

[1,1,2,3,8,19,57,186,740,3389,18502,120221,932260,
 8596844,93762704,1201732437,17992683043,
 313098431306,6305419392541]

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Last modified July 9 14:41 EDT 2020. Contains 335543 sequences. (Running on oeis4.)