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A115415 as a simple table

n a(n)
0 1
1 1
2 3
3 18
4 161
5 1900
6 27755
7 482552
8 9722113
9 222612624
10 5707904499
11 161981127968
12 5039646554593
13 170561613679808
14 6237995487261915
15 245159013138710400
16 10303367499652761601
17 461102348510408544512

[1,1,3,18,161,1900,27755,482552,9722113,222612624,
 5707904499,161981127968,5039646554593,
 170561613679808,6237995487261915,
 245159013138710400,10303367499652761601,
 461102348510408544512]

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Last modified January 19 21:47 EST 2020. Contains 331066 sequences. (Running on oeis4.)