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A261777 as a simple table

n a(n)
0 1
1 1
2 3
3 19
4 115
5 951
6 10281
7 116313
8 1436499
9 20203795
10 338834053
11 5824666893
12 108142092169
13 2118605140237
14 44375797806315
15 1039641056342619
16 25413053107195539
17 646983321301050147
18 17311013062443870681
19 481282277347815404745
20 13913039361920333694165

[1,1,3,19,115,951,10281,116313,1436499,20203795,
 338834053,5824666893,108142092169,2118605140237,
 44375797806315,1039641056342619,25413053107195539,
 646983321301050147,17311013062443870681,
 481282277347815404745,13913039361920333694165]

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Last modified September 24 16:23 EDT 2021. Contains 347645 sequences. (Running on oeis4.)