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A250137 as a simple table

n a(n)
1 216
2 986
3 4368
4 19446
5 79200
6 311498
7 1219944
8 4617079
9 17036428
10 62297886
11 224152970
12 793463094
13 2782588100
14 9662944274
15 33203799944
16 113195928313
17 383180556700
18 1287749650878
19 4300782679270
20 14285051453226
21 47196108008844

[216,986,4368,19446,79200,311498,1219944,4617079,
 17036428,62297886,224152970,793463094,2782588100,
 9662944274,33203799944,113195928313,383180556700,
 1287749650878,4300782679270,14285051453226,
 47196108008844]

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Last modified April 20 00:03 EDT 2024. Contains 371798 sequences. (Running on oeis4.)