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A215866 as a simple table

n a(n)
1 1
2 5
3 12
4 78
5 189
6 1233
7 2988
8 19494
9 47241
10 308205
11 746892
12 4872798
13 11808549
14 77040153
15 186696108
16 1218024054
17 2951712081
18 19257264405
19 46667304972
20 304462158318
21 737821743309
22 4813622739873
23 11665145978028
24 76104577363014

[1,5,12,78,189,1233,2988,19494,47241,308205,
 746892,4872798,11808549,77040153,186696108,
 1218024054,2951712081,19257264405,46667304972,
 304462158318,737821743309,4813622739873,
 11665145978028,76104577363014]

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Last modified July 4 15:43 EDT 2020. Contains 335448 sequences. (Running on oeis4.)