A169008 - OEIS

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A169008 as a simple table

n	a(n)
0	1
1	43
2	1806
3	75852
4	3185784
5	133802928
6	5619722976
7	236028364992
8	9913191329664
9	416354035845888
10	17486869505527296
11	734448519232146432
12	30846837807750150144
13	1295567187925506306048
14	54413821892871264854016

[1,43,1806,75852,3185784,133802928,5619722976, 236028364992,9913191329664,416354035845888, 17486869505527296,734448519232146432, 30846837807750150144,1295567187925506306048, 54413821892871264854016]