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A094972 as a simple table

n a(n)
0 1
1 5
2 30
3 166
4 915
5 5032
6 27680
7 152243
8 837339
9 4605366
10 25329516
11 139312339
12 766217865
13 4214198259
14 23178090428
15 127479497357
16 701137235467
17 3856254795069
18 21209401372879
19 116651707550839
20 641584391529617

[1,5,30,166,915,5032,27680,152243,837339,4605366,
 25329516,139312339,766217865,4214198259,
 23178090428,127479497357,701137235467,
 3856254795069,21209401372879,116651707550839,
 641584391529617]

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Last modified April 19 10:39 EDT 2019. Contains 322255 sequences. (Running on oeis4.)