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A248731
as a simple table
n
a(n)
0
1
1
1
2
4
3
10
4
25
5
58
6
135
7
306
8
690
9
1550
10
3474
11
7776
12
17398
13
38912
14
87022
15
194598
16
435148
17
973034
18
2175785
[1,1,4,10,25,58,135,306,690,1550,3474,7776,17398, 38912,87022,194598,435148,973034,2175785]
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Last modified April 24 15:50 EDT 2024. Contains 371961 sequences. (Running on oeis4.)