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A220978 as a simple table

n a(n)
0 1
1 19
2 217
3 2107
4 19441
5 176419
6 1592137
7 14342347
8 129120481
9 1162202419
10 10460176057
11 94142647387
12 847287015121
13 7625592702019
14 68630363015977
15 617673353237227
16 5559060437415361
17 50031544711579219
18 450283904728735897
19 4052555149532191867

[1,19,217,2107,19441,176419,1592137,14342347,
 129120481,1162202419,10460176057,94142647387,
 847287015121,7625592702019,68630363015977,
 617673353237227,5559060437415361,
 50031544711579219,450283904728735897,
 4052555149532191867]

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Last modified April 26 07:58 EDT 2024. Contains 371991 sequences. (Running on oeis4.)