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A041581 as a simple table

n a(n)
0 1
1 1
2 2
3 9
4 11
5 20
6 691
7 711
8 1402
9 6319
10 7721
11 14040
12 485081
13 499121
14 984202
15 4435929
16 5420131
17 9856060
18 340526171
19 350382231
20 690908402
21 3114015839
22 3804924241
23 6918940080
24 239048886961
25 245967827041
26 485016714002
27 2186034683049
28 2671051397051

[1,1,2,9,11,20,691,711,1402,6319,7721,14040,
 485081,499121,984202,4435929,5420131,9856060,
 340526171,350382231,690908402,3114015839,
 3804924241,6918940080,239048886961,245967827041,
 485016714002,2186034683049,2671051397051]

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Last modified April 21 04:56 EDT 2019. Contains 322310 sequences. (Running on oeis4.)