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A034904 as a simple table

n a(n)
1 1
2 28
3 980
4 37730
5 1531838
6 64337196
7 2766499428
8 121034349975
9 5365856182225
10 240390356963680
11 10861273400995360
12 494187939745288880
13 22618601857572837200
14 1040455685448350511200
15 48069052667713793617440

[1,28,980,37730,1531838,64337196,2766499428,
 121034349975,5365856182225,240390356963680,
 10861273400995360,494187939745288880,
 22618601857572837200,1040455685448350511200,
 48069052667713793617440]

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Last modified December 17 02:31 EST 2018. Contains 318192 sequences. (Running on oeis4.)