A172831 - OEIS

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A172831 as a simple table

n	a(n)
1	252
2	79796556
3	62810128195920
4	76034933358200884620
5	117660704031419990309224272
6	214168486397890522888429407832464
7	437263276341891154808563746635206959552

[252,79796556,62810128195920,76034933358200884620, 117660704031419990309224272, 214168486397890522888429407832464, 437263276341891154808563746635206959552]