A035097 - OEIS

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A035097 as a simple table

n	a(n)
1	1
2	45
3	2565
4	161595
5	10762227
6	742593663
7	52511980455
8	3780862592760
9	276002969271480
10	20369019132235224
11	1516566060845513496
12	113742454563413512200
13	8583180609746819651400
14	651095557682223033556200

[1,45,2565,161595,10762227,742593663,52511980455, 3780862592760,276002969271480,20369019132235224, 1516566060845513496,113742454563413512200, 8583180609746819651400,651095557682223033556200]