A278174 - OEIS

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A278174 as a simple table

n	a(n)
1	0
2	43
3	737
4	17396
5	396024
6	9120939
7	209105063
8	4797179760
9	110034231906
10	2523955236624
11	57893739618179
12	1327951316712237
13	30460184207856087
14	698687420488831794
15	16026301711146587408
16	367606943763824641516

[0,43,737,17396,396024,9120939,209105063, 4797179760,110034231906,2523955236624, 57893739618179,1327951316712237,30460184207856087, 698687420488831794,16026301711146587408, 367606943763824641516]